1540:
high-color diamonds are rarer, limiting supply; and the bright white appearance of high-color diamonds is more desired by consumers, increasing demand. Poor color is usually not enough to eliminate the use of diamond as a gemstone: if other gemological characteristics of a stone are good, a low-color diamond can remain more valuable as a gem diamond than an industrial-use diamond, and can see use in diamond jewelry. Furthermore, it is much more cost effective to purchase a near-colorless grade diamond (e.g. "G" rated) instead of a colorless grade diamond (e.g. "D" rated), as they are nearly indistinguishable to the naked untrained eye, especially when mounted on a ring setting.
399:
48:
20:
411:
240:
1459:
589:
1524:
Blue-Green, Green-Blue, Greenish-Blue, Blue, Violetish-Blue, Bluish-Violet, Violet, Purple, Reddish-Purple, Red-Purple, Purple-Red, Purplish-Red). A modifying color combination can also be added (e.g., Olive or Brown-Olive) for stones without the purest hues. Additionally, for diamonds the following colors are used: White (which are milky), Black (which are opaque), Gray, Pink, Brown.
251:
1531:
usually used to describe a diamond that is
Orangish-Brown because cognac is a deep golden-orange color. Coffee is usually used to describe a diamond that is a Deep Brown or Vivid Brown color. Some grading agencies may also describe brown stones as Fancy Yellowish-Brown, Fancy Light Brown, Fancy Intense Brown, etc.
1543:
Fancy diamonds are valued using different criteria than those used for regular diamonds. When the color is rare, the more intensely colored a diamond is, the more valuable it becomes. Another factor that affects the value of fancy-colored diamonds is fashion trends. For example, pink diamonds fetched
1539:
Diamonds that enter the
Gemological Institute of America's scale are valued according to their clarity and color. For example, a "D" or "E" rated diamond (both grades are considered colorless) is much more valuable than an "R" or "Y" rated diamond (light yellow or brown). This is due to two effects:
1519:
Diamond colors more saturated than this scale are known as "fancy color" diamonds. Any light shade of diamond other than Light Yellow or Light Brown automatically falls out of the scale. For instance, a pale blue diamond won't get a "K", "N", or "S" color grade, it will get a Faint Blue, Very Light
729:
is done with diamond placed on its table facet and pavilion side facing upwards ( i.e. "upside down"— resting on the face one normally looks at). When color grading is done in the mounting, the grade is expressed as an estimated color grade and commonly as a range of color. Grading mounted diamonds
446:
as the main impurity, commonly at a concentration of 0.1%. If the nitrogen atoms are in pairs they do not affect the diamond's color; these are Type IaA. If the nitrogen atoms are in large even-numbered aggregates they impart a yellow to brown tint (Type IaB). About 98% of gem diamonds are type Ia,
1551:
Fancy-colored diamonds such as the deep-blue Hope
Diamond are among the most valuable and sought-after diamonds in the world. In 2009, a 7-carat (1.4 g) blue diamond fetched the then highest price per carat ever paid for a diamond when it was sold at auction for 10.5 million Swiss francs (US$
1523:
Laboratories use a list of 27 color hues that span the full spectrum for colored gems and diamonds (Red, Orangish-Red, Reddish-Orange, Orange, Yellowish-Orange, Yellow-Orange, Orange-Yellow, Orangish-Yellow, Yellow, Greenish-Yellow, Green-Yellow, Yellow-Green, Yellowish-Green, Green, Bluish-Green,
709:
color fall into the fancy color diamond range. Grading begins with the letter D, (omitting A, B, C) to ensure that there is no confusion with any of the previous terminology that was used prior to the standardization of the color grading scale. While several grading laboratories use the D–Z color
1432:
Under the GIA system, yellow or brown color diamonds having color more intense than "Z", as well as diamonds exhibiting color other than yellow or brown are considered fancy colored diamonds. These diamonds are graded using separate systems which indicate the characteristics of the color, and not
1530:
The terms "Champagne", "Cognac" and "Coffee" refer to different types of brown diamonds. In the diamond processing/dealing industry, the word "Brown" is considered a killer as far as diamond value goes. Even though champagne is a light yellow color, champagne diamonds are Light Brown. Cognac is
426:
Diamonds occur in a variety of colors—steel gray, white, blue, yellow, orange, red, green, pink to purple, brown, and black. Colored diamonds contain interstitial impurities or structural defects that cause the coloration; pure diamonds are perfectly transparent and colorless. Diamonds are
734:
and visually comparing the diamond color under the same color conditions as unmounted diamond grading. The resulting grade is typically less accurate, and is therefore expressed as a range of color. While a grading laboratory will possess a complete set of
653:
are also fancy color diamonds. All other factors being equal, the most valuable diamonds are those with the least color (appearing white to the eye), and those possessing vivid color ( especially yellow, pink, and blue). Diamonds at the low end of the
284:. Depending on the hue and intensity of a diamond's coloration, a diamond's color can either detract from or enhance its value. For example, most white diamonds are discounted in price when more yellow hue is detectable, while intense
725:, assessing where in the range of color the diamond resides. This process occurs in a lighting box, fitted with daylight equivalent lamps. Accurate color grading can only be performed with diamond unset, as the comparison with
1552:
9.5 million at the time) which is in excess of US$ 1.3 million per carat. This record was broken in 2013 when an orange diamond sold for US$ 35 million or US$ 2.4 million per carat. It was again broken in 2016 when the
315:
As the diamond trade developed, early diamond grades were introduced. Without any co-operative development, these early grading systems lacked standard nomenclature and consistency. Some early grading scales were;
519:
during crystal growth—these diamonds are rare (1.8% of gem diamonds), but constitute a large percentage of
Australian production. Type IIb diamonds, which account for 0.1% of gem diamonds, are usually light
721:
is known to exhibit the very least amount of body color that a diamond in that color grade may exhibit. A trained diamond grader compares a diamond of unknown grade against the series of
1572:
diamond on April 3, 2017. The Pink Star was sold at an auction in Hong Kong for US$ 71.2 m (553 million Hong Kong dollars including fees) to Chow Tai Fook
Enterprises.(GBP 34.7m; 56.83m
658:, which possess a pale yellow or brown hue, are the least desirable for jewelry. Color is one of the four traditional factors by which a diamond is evaluated (the others being
1527:
The saturation of these hues is then described with one of nine descriptors: Faint, Very Light, Light, Fancy Light, Fancy, Fancy Dark, Fancy
Intense, Fancy Deep, Fancy Vivid.
497:
Type II diamond have no measurable nitrogen impurities. Type II diamonds absorb in a different region of the infrared, and transmit in the ultraviolet below 225 nm (2.25
2171:
501:
10 m), unlike Type I diamonds. They also have differing fluorescence characteristics, but no discernible visible absorption spectrum. Type IIa diamond can be colored
459:, whose deposits are largely Type Ia. If the nitrogen atoms are dispersed throughout the crystal in isolated sites (not paired or grouped), they give the stone an intense
473:
diamonds belong to this type, which represents only 10% of known natural diamonds. Synthetic diamond containing nitrogen is Type Ib. Type I diamonds absorb in both the
1871:
575:
white diamonds are also caused by microscopic inclusions. Purple diamonds are caused by a combination of crystal lattice distortion and high hydrogen content.
2143:
1680:
1653:
1906:– Confédération International de la Bijouterie, Joaillerie, Orfèvrerie des Diamantes, Perles et Pierres (World Jewellery Confederation),
686:
67:
403:
2191:
1966:
1506:
628:
398:
2068:
1561:
1811:
1556:, a 14.62-carat (2.924 g) vivid blue diamond became the most expensive jewel ever sold at an auction. It is the largest
1484:
1480:
610:
606:
533:
486:
419:
276:. However, in reality almost no gem-sized natural diamonds are absolutely perfect. The color of a diamond may be affected by
62:
536:). However, a blue-grey color may also occur in Type Ia diamonds and be unrelated to boron. Also not restricted to type are
739:
representing every color grade, the independent grader working in a retail environment works with a smaller subset of
431:
and several subtypes, according to the nature of impurities present and how these impurities affect light absorption.
312:
Color grading of diamonds was performed as a step of sorting rough diamonds for sale by the London
Diamond Syndicate.
1469:
1433:
just its presence. These color grading systems are more similar to those used for other colored gemstones, such as
227:
217:
1488:
1473:
599:
1759:
Mäki, Jussi-Matti; et al. (2009). "Properties of optically active vacancy clusters in type IIa diamond".
1700:
743:
that covers only the typical grade range of color they expect to encounter while grading. A common subset of
2210:
1723:
710:
scale (most notably: GIA, EGL, and IGI), there is no universal standard for how the grades are applied.
415:
301:
222:
124:
1826:
1768:
1715:
212:
1728:
1590:
1569:
645:. Diamonds of more intense color (usually yellow, but in some cases red, green or blue) are termed
560:
552:
515:
277:
196:
2041:
1792:
1741:
641:
The majority of mined diamonds fall between white and pale yellow or brown; what is known as the
265:
170:
165:
119:
1990:
1645:
2187:
1962:
1784:
1676:
1649:
485:
10 m). They also have a characteristic fluorescence and visible absorption spectrum (see
281:
134:
1852:
1670:
1834:
1776:
1733:
1595:
1553:
701:
color are usually described using their letter grade, and a descriptive phrase, for example
244:
191:
175:
1585:
663:
556:
129:
93:
47:
1780:
1830:
1772:
1719:
1638:
1545:
650:
465:
410:
19:
2178:, Winter 2008, Vol. 44, No. 4. Details history and methodology of the GIA color scale.
2076:
1838:
1737:
559:
from temperature and pressure. Black diamonds are caused by microscopic black or gray
447:
and most of these are a mixture of IaA and IaB material: these diamonds belong to the
2204:
1745:
1565:
1557:
529:
452:
144:
1796:
304:
displays a spectacular array of naturally colored diamonds, including red diamonds.
2016:
659:
456:
393:
293:
289:
285:
88:
24:
254:
1573:
1458:
667:
588:
572:
478:
297:
103:
1568:
in Geneva in May 2016 for US$ 50.6 million. The record was broken again by the
1672:
Jewelry & Gems, the Buying Guide: How to Buy
Diamonds, Pearls, Colored ...
2099:
1872:"3.37-Carat 'Purple Orchid' Diamond To Be Unveiled At Hong Kong Jewelry Show"
1614:
2117:
730:
involves holding the mounted diamonds table close to the table facet of the
545:
1788:
250:
1438:
564:
541:
474:
440:
149:
1978:
2184:
Secrets of the Gem Trade, the
Connoisseur's Guide to Precious Gemstones
2072:
1442:
770:
Diamonds in the normal color range are graded loose (for example F–G).
613: in this section. Unsourced material may be challenged and removed.
568:
139:
72:
39:
352:. Numerous terms developed to describe diamonds of particular colors:
544:
in the crystal lattice produced by exposure to varying quantities of
1640:
How to Buy a
Diamond: Insider Secrets for Getting Your Money's Worth
747:
would consist of five diamonds in two grade increments, such as an
697:
which is a pale yellow or brown color. Brown diamonds darker than
525:
409:
397:
18:
767:. The intermediate grades are assessed by the graders judgement.
1434:
443:
402:
Jewellers diamonds in groups of similar colors. These from the
1452:
582:
296:) can be dramatically more valuable. Of all colored diamonds,
269:
2069:"Corrected: Rare blue diamond sells for record $ 9.5 million"
16:
Color due to impurities or crystal lattice defects in diamond
2186:(Second ed.). Brunswick House Press. pp. 145–162.
2144:"Oppenheimer Blue diamond sells for world record at auction"
685:
used by internationally recognized laboratories (GIA &
713:
Diamond color is graded by comparing a sample stone to a
451:, named after the diamond-rich region formerly known as
1445:, than they are to the system used for white diamonds.
1812:"Optical characterization of natural Argyle diamonds"
1669:
Antoinette Matlins, Antonio C. Bonanno (April 2009).
528:within the crystal matrix; these diamonds are also
2118:"Oppenheimer Blue diamond sets new auction record"
1961:Rubin & Son n.v., Antwerp, 9th edition, 2001,
1637:
1926:Gemological Institute of America, Carlsbad, 2004
1701:"Optical absorption and luminescence in diamond"
681:Refers to a grading scale for diamonds in the
513:due to structural anomalies arising through
8:
1934:
1932:
1810:K. Iakoubovskii; Adriaenssens, G.J (2002).
1487:. Unsourced material may be challenged and
264:A chemically pure and structurally perfect
27:, 45.52 carats (9.104 g), dark grayish-blue
30:
1727:
1548:received a pink diamond engagement ring.
1507:Learn how and when to remove this message
705:. Diamonds with more depth of color than
629:Learn how and when to remove this message
2172:"Color Grading 'D-to-Z' Diamonds at GIA"
1953:
1951:
1949:
1947:
1694:
1692:
772:
571:and/or microscopic fractures. Opaque or
1870:DeMarco, Anthony (September 13, 2014).
1606:
994:Colorless when viewed through the crown
540:diamonds, whose color is caused by GR1
204:
183:
157:
111:
80:
54:
38:
1939:The AGS Way: Diamond Grading Standards
1857:Natural History Museum of L.A. Minblog
869:grade and electronic colorimeter scale
864:grade and electronic colorimeter scale
1898:– Antwerpse Gemologische Instelling,
1405:
1338:
1243:
1150:
1085:
986:
958:
427:scientifically classed into two main
7:
1957:Pagel-Thielsen, Verena G.G., F.G.A.
1894:– Gemological Institute of America,
1761:Journal of Physics: Condensed Matter
1485:adding citations to reliable sources
689:for example). The scale ranges from
611:adding citations to reliable sources
2098:O'Brien, Jane (December 24, 2014).
2067:Nebehay, Stephanie (May 13, 2009).
1914:– Scandinavian Diamond Nomenclature
1644:. Sourcebooks Casablanca. p.
532:, unlike other diamond types (see
404:National Museum of Natural History
14:
1910:– International Diamond Council,
1564:ever sold at auction; it sold at
280:and/or structural defects in the
268:is perfectly transparent with no
2100:"What makes pink diamonds pink?"
1615:"What makes pink diamonds pink?"
1562:Gemological Institute of America
1457:
587:
534:Electrical properties of diamond
249:
239:
238:
46:
1959:Diamond Grading ABC: The Manual
1560:blue diamond classified by the
598:needs additional citations for
1781:10.1088/0953-8984/21/36/364216
1449:Colored diamond grading system
693:which is totally colorless to
422:in London under natural light.
1:
1839:10.1016/S0925-9635(01)00533-7
1819:Diamond and Related Materials
774:Diamond color grading scales
487:Optical properties of diamond
481:region, from 320 nm (3.2
1924:Diamond Grading: Lab Manual
1738:10.1088/0034-4885/42/10/001
1636:Fred Cuellar (2005-03-01).
1212:Slightly colored to colored
563:of other materials such as
551:Pink and red are caused by
184:Imitations and enhancements
2227:
1941:American Gem Society, 1999
1520:Blue or Light Blue grade.
1286:
1218:
1210:
1207:
391:
2182:Wise, Richard W. (2016).
2042:"Shades Of A Desert Rose"
1535:Value of colored diamonds
1402:
1399:
1369:
1366:
1341:
1327:
1319:
1314:
1311:
1308:
1305:
1302:
1269:
1266:
1263:
1260:
1232:
1221:
1215:
1204:
1201:
1198:
1173:
1170:
1167:
1162:
1159:
1156:
1153:
1147:
1144:
1139:
1136:
1128:
1122:
1119:
1099:
1091:
1088:
1053:
1027:
1016:
1008:
1005:
1000:
997:
992:
989:
983:
980:
977:
972:
969:
964:
961:
955:
952:
949:
941:
938:
935:
930:
924:
921:
918:
907:
877:
872:
867:
862:
857:
800:
789:
778:
469:tint (Type Ib); the rare
406:are a medium brown color.
1902:– American Gem Society,
884:grade for .50ct and over
308:History of color grading
218:Schiphol Airport robbery
68:Crystallographic defects
1991:"Diamonds colour chart"
223:Graff Diamonds robbery
73:Formation and surfacing
1979:Engagement Diamond FAQ
1428:Fancy colored diamonds
1100:Slightly tinted white
1089:Slightly tinted white
1086:Slightly tinted white
717:set of diamonds. Each
423:
420:Natural History Museum
416:Aurora Pyramid of Hope
407:
302:Aurora Pyramid of Hope
28:
2015:Naturski, Sebastian.
889:grade for under .50ct
879:grade and description
859:grade and description
439:Type I diamonds have
413:
401:
228:Belgium diamond heist
22:
2021:Your Diamond Teacher
1995:kristallsmolensk.com
1544:higher prices after
1481:improve this section
928:Exceptional white +
925:Exceptional white +
808:historical: pre 1995
607:improve this article
418:as exhibited in the
414:The 296 gems of the
300:are the rarest. The
213:Millennium Dome raid
140:The diamond industry
2176:Gems & Gemology
1859:. January 21, 2013.
1853:"Color in Diamonds"
1831:2002DRM....11..125I
1773:2009JPCM...21J4216M
1720:1979RPPh...42.1605W
1591:Diamond enhancement
775:
553:plastic deformation
516:plastic deformation
278:chemical impurities
63:Material properties
34:Part of a series on
1699:J. Walker (1979).
1273:Very light yellow
962:Exceptional white
959:Exceptional white
773:
683:normal color range
676:normal color range
656:normal color range
643:normal color range
579:Colorless diamonds
424:
408:
135:Synthetic diamonds
120:Diamond (gemstone)
29:
1714:(10): 1605–1659.
1682:978-0-943763-71-2
1655:978-1-4022-0409-8
1517:
1516:
1509:
1420:
1419:
1234:Very Light Yellow
1103:Commercial White
639:
638:
631:
524:due to scattered
262:
261:
2218:
2197:
2160:
2159:
2157:
2155:
2140:
2134:
2133:
2131:
2129:
2114:
2108:
2107:
2095:
2089:
2088:
2086:
2084:
2075:. Archived from
2064:
2058:
2057:
2055:
2053:
2038:
2032:
2031:
2029:
2027:
2012:
2006:
2005:
2003:
2001:
1987:
1981:
1976:
1970:
1955:
1942:
1936:
1927:
1921:
1915:
1886:
1880:
1879:
1867:
1861:
1860:
1849:
1843:
1842:
1816:
1807:
1801:
1800:
1756:
1750:
1749:
1731:
1705:
1696:
1687:
1686:
1666:
1660:
1659:
1643:
1633:
1627:
1626:
1624:
1622:
1611:
1596:List of diamonds
1554:Oppenheimer Blue
1512:
1505:
1501:
1498:
1492:
1461:
1453:
1423:Colored diamonds
1129:Top silver cape
1093:Slightly colored
845:Old World Terms
776:
634:
627:
623:
620:
614:
591:
583:
500:
484:
463:or occasionally
253:
242:
241:
50:
31:
2226:
2225:
2221:
2220:
2219:
2217:
2216:
2215:
2201:
2200:
2194:
2181:
2168:
2166:Further reading
2163:
2153:
2151:
2142:
2141:
2137:
2127:
2125:
2122:BBC News Online
2116:
2115:
2111:
2097:
2096:
2092:
2082:
2080:
2079:on May 19, 2009
2066:
2065:
2061:
2051:
2049:
2048:. June 22, 2004
2040:
2039:
2035:
2025:
2023:
2017:"Diamond Color"
2014:
2013:
2009:
1999:
1997:
1989:
1988:
1984:
1977:
1973:
1956:
1945:
1937:
1930:
1922:
1918:
1887:
1883:
1869:
1868:
1864:
1851:
1850:
1846:
1814:
1809:
1808:
1804:
1758:
1757:
1753:
1708:Rep. Prog. Phys
1703:
1698:
1697:
1690:
1683:
1668:
1667:
1663:
1656:
1635:
1634:
1630:
1620:
1618:
1613:
1612:
1608:
1604:
1586:Diamond clarity
1582:
1537:
1513:
1502:
1496:
1493:
1478:
1462:
1451:
1430:
1425:
1339:Tinted color 3
1244:Tinted color 2
1205:Tinted color 1
679:
635:
624:
618:
615:
604:
592:
581:
557:crystal lattice
498:
495:
482:
437:
396:
390:
388:Possible colors
310:
282:crystal lattice
176:Famous diamonds
158:Cultural impact
130:Diamond cutting
17:
12:
11:
5:
2224:
2222:
2214:
2213:
2211:Diamond colors
2203:
2202:
2199:
2198:
2192:
2179:
2167:
2164:
2162:
2161:
2135:
2109:
2090:
2059:
2033:
2007:
1982:
1971:
1943:
1928:
1916:
1889:Organizations:
1881:
1862:
1844:
1802:
1767:(36): 364216.
1751:
1729:10.1.1.467.443
1688:
1681:
1661:
1654:
1628:
1605:
1603:
1600:
1599:
1598:
1593:
1588:
1581:
1578:
1546:Jennifer Lopez
1536:
1533:
1515:
1514:
1465:
1463:
1456:
1450:
1447:
1429:
1426:
1424:
1421:
1418:
1417:
1413:
1412:
1408:
1407:
1404:
1401:
1398:
1394:
1393:
1390:
1387:
1383:
1382:
1379:
1376:
1372:
1371:
1368:
1365:
1362:
1359:
1355:
1354:
1351:
1348:
1344:
1343:
1340:
1337:
1334:
1331:
1326:
1322:
1321:
1317:
1316:
1313:
1310:
1307:
1304:
1300:
1299:
1296:
1293:
1289:
1288:
1285:
1282:
1279:
1275:
1274:
1271:
1268:
1265:
1262:
1259:
1256:
1253:
1249:
1248:
1245:
1242:
1239:
1236:
1231:
1227:
1226:
1223:
1220:
1217:
1214:
1209:
1206:
1203:
1200:
1197:
1194:
1191:
1187:
1186:
1183:
1180:
1176:
1175:
1172:
1169:
1165:
1164:
1161:
1158:
1155:
1152:
1149:
1146:
1143:
1138:
1134:
1133:
1130:
1127:
1124:
1121:
1118:
1115:
1112:
1108:
1107:
1104:
1101:
1098:
1095:
1090:
1087:
1084:
1081:
1078:
1075:
1072:
1068:
1067:
1064:
1061:
1058:
1055:
1052:
1049:
1046:
1043:
1040:
1036:
1035:
1034:Top Wesselton
1032:
1029:
1026:
1023:
1020:
1018:Near Colorless
1015:
1011:
1010:
1007:
1003:
1002:
999:
998:Top Wesselton
996:
991:
988:
985:
982:
979:
975:
974:
971:
967:
966:
963:
960:
957:
954:
951:
947:
946:
943:
940:
937:
934:
929:
926:
923:
920:
917:
914:
911:
906:
902:
901:
899:series 2 scale
896:
894:series 1 scale
891:
886:
881:
876:
871:
866:
861:
855:
854:
846:
843:
835:
832:
824:
821:
813:
810:
802:
799:
791:
788:
780:
678:
672:
651:Black diamonds
637:
636:
595:
593:
586:
580:
577:
530:semiconductors
494:
491:
436:
433:
392:Main article:
389:
386:
309:
306:
260:
259:
258:
257:
247:
233:
232:
231:
230:
225:
220:
215:
207:
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194:
186:
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179:
178:
173:
168:
160:
159:
155:
154:
153:
152:
147:
142:
137:
132:
127:
122:
114:
113:
109:
108:
107:
106:
101:
96:
91:
83:
82:
78:
77:
76:
75:
70:
65:
57:
56:
52:
51:
43:
42:
36:
35:
15:
13:
10:
9:
6:
4:
3:
2:
2223:
2212:
2209:
2208:
2206:
2195:
2193:9780972822329
2189:
2185:
2180:
2177:
2173:
2170:
2169:
2165:
2150:. 18 May 2016
2149:
2145:
2139:
2136:
2124:. 18 May 2016
2123:
2119:
2113:
2110:
2105:
2101:
2094:
2091:
2078:
2074:
2070:
2063:
2060:
2047:
2043:
2037:
2034:
2022:
2018:
2011:
2008:
1996:
1992:
1986:
1983:
1980:
1975:
1972:
1968:
1967:3-9800434-6-0
1964:
1960:
1954:
1952:
1950:
1948:
1944:
1940:
1935:
1933:
1929:
1925:
1920:
1917:
1913:
1909:
1905:
1901:
1897:
1893:
1890:
1885:
1882:
1877:
1873:
1866:
1863:
1858:
1854:
1848:
1845:
1840:
1836:
1832:
1828:
1824:
1820:
1813:
1806:
1803:
1798:
1794:
1790:
1786:
1782:
1778:
1774:
1770:
1766:
1762:
1755:
1752:
1747:
1743:
1739:
1735:
1730:
1725:
1721:
1717:
1713:
1709:
1702:
1695:
1693:
1689:
1684:
1678:
1674:
1673:
1665:
1662:
1657:
1651:
1647:
1642:
1641:
1632:
1629:
1616:
1610:
1607:
1601:
1597:
1594:
1592:
1589:
1587:
1584:
1583:
1579:
1577:
1575:
1571:
1567:
1563:
1559:
1555:
1549:
1547:
1541:
1534:
1532:
1528:
1525:
1521:
1511:
1508:
1500:
1497:December 2016
1490:
1486:
1482:
1476:
1475:
1471:
1466:This section
1464:
1460:
1455:
1454:
1448:
1446:
1444:
1440:
1436:
1427:
1422:
1415:
1414:
1410:
1409:
1396:
1395:
1391:
1388:
1385:
1384:
1380:
1377:
1374:
1373:
1363:
1360:
1357:
1356:
1352:
1349:
1346:
1345:
1335:
1332:
1330:
1324:
1323:
1318:
1301:
1297:
1294:
1291:
1290:
1287:Light yellow
1283:
1280:
1277:
1276:
1272:
1267:Light yellow
1257:
1254:
1251:
1250:
1246:
1240:
1237:
1235:
1229:
1228:
1224:
1219:Tinted color
1213:
1208:Tinted color
1195:
1192:
1189:
1188:
1184:
1181:
1178:
1177:
1166:
1160:Tinted white
1154:Tinted white
1151:Tinted white
1142:
1135:
1131:
1125:
1116:
1113:
1110:
1109:
1105:
1102:
1096:
1094:
1082:
1079:
1076:
1073:
1070:
1069:
1065:
1062:
1059:
1056:
1050:
1047:
1044:
1041:
1038:
1037:
1033:
1030:
1024:
1021:
1019:
1013:
1012:
1004:
995:
990:Rare white +
987:Rare white +
976:
968:
948:
944:
942:Finest White
933:
927:
915:
912:
910:
904:
903:
900:
897:
895:
892:
890:
887:
885:
882:
880:
875:
870:
865:
860:
856:
853:
850:
847:
844:
842:
839:
836:
833:
831:
828:
825:
822:
820:
817:
814:
811:
809:
806:
803:
798:
795:
792:
787:
784:
781:
777:
771:
768:
766:
762:
758:
754:
750:
746:
745:master stones
742:
741:master stones
738:
737:master stones
733:
728:
727:master stones
724:
723:master stones
720:
716:
711:
708:
704:
703:M Faint Brown
700:
696:
692:
688:
684:
677:
673:
671:
669:
665:
661:
657:
652:
648:
644:
633:
630:
622:
619:December 2016
612:
608:
602:
601:
596:This section
594:
590:
585:
584:
578:
576:
574:
570:
566:
562:
558:
554:
549:
547:
543:
542:color centers
539:
535:
531:
527:
523:
518:
517:
512:
508:
504:
492:
490:
488:
480:
476:
472:
468:
467:
462:
458:
454:
453:Cape Province
450:
445:
442:
434:
432:
430:
421:
417:
412:
405:
400:
395:
387:
385:
383:
379:
375:
371:
367:
363:
359:
355:
351:
347:
343:
339:
335:
331:
327:
323:
319:
313:
307:
305:
303:
299:
295:
292:(such as the
291:
290:blue diamonds
287:
286:pink diamonds
283:
279:
275:
271:
267:
256:
252:
248:
246:
237:
236:
235:
234:
229:
226:
224:
221:
219:
216:
214:
211:
210:
209:
208:
203:
198:
195:
193:
190:
189:
188:
187:
182:
177:
174:
172:
169:
167:
164:
163:
162:
161:
156:
151:
148:
146:
145:Blood diamond
143:
141:
138:
136:
133:
131:
128:
126:
125:List of mines
123:
121:
118:
117:
116:
115:
110:
105:
102:
100:
97:
95:
92:
90:
87:
86:
85:
84:
79:
74:
71:
69:
66:
64:
61:
60:
59:
58:
53:
49:
45:
44:
41:
37:
33:
32:
26:
21:
2183:
2175:
2152:. Retrieved
2148:The Guardian
2147:
2138:
2126:. Retrieved
2121:
2112:
2103:
2093:
2083:September 9,
2081:. Retrieved
2077:the original
2062:
2050:. Retrieved
2045:
2036:
2024:. Retrieved
2020:
2010:
1998:. Retrieved
1994:
1985:
1974:
1958:
1938:
1923:
1919:
1911:
1907:
1903:
1899:
1895:
1891:
1888:
1884:
1875:
1865:
1856:
1847:
1822:
1818:
1805:
1764:
1760:
1754:
1711:
1707:
1675:p. 37.
1671:
1664:
1639:
1631:
1619:. Retrieved
1609:
1550:
1542:
1538:
1529:
1526:
1522:
1518:
1503:
1494:
1479:Please help
1467:
1431:
1329:Light Yellow
1328:
1233:
1211:
1174:Silver cape
1141:Faint Yellow
1140:
1106:Top Crystal
1097:Top Crystal
1092:
1017:
993:
931:
908:
898:
893:
888:
883:
878:
873:
868:
863:
858:
851:
848:
840:
837:
829:
826:
818:
815:
807:
804:
796:
793:
785:
782:
769:
764:
760:
756:
752:
748:
744:
740:
736:
732:master stone
731:
726:
722:
719:master stone
718:
715:master stone
714:
712:
706:
702:
698:
694:
690:
682:
680:
675:
674:Grading the
660:carat weight
655:
646:
642:
640:
625:
616:
605:Please help
600:verification
597:
550:
537:
521:
514:
510:
506:
502:
496:
470:
464:
460:
457:South Africa
448:
438:
428:
425:
394:Diamond type
381:
377:
373:
369:
365:
361:
357:
353:
349:
345:
341:
337:
333:
329:
325:
321:
317:
314:
311:
298:red diamonds
294:Hope Diamond
273:
263:
197:Enhancements
98:
25:Hope Diamond
2026:26 December
1558:fancy vivid
1222:Light cape
1031:Rare white
1028:Rare white
1001:Fine White
834:Scan. D.N.
647:fancy color
479:ultraviolet
449:Cape series
1912:Scan. D.N.
1825:(1): 125.
1621:25 January
1602:References
1566:Christie's
1320:Dark cape
1202:4.51–5.50
1123:3.01–3.75
1066:Wesselton
1060:Wesselton
1051:2.01–2.50
1009:1.36–2.00
973:0.76–1.35
852:historical
649:diamonds.
573:opalescent
561:inclusions
374:fine white
370:blue white
112:Production
2052:March 12,
1746:250857323
1724:CiteSeerX
1570:Pink Star
1468:does not
1392:9.5–9.99
1381:9.0–9.49
1364:8.5–8.99
1353:8.0–8.49
1336:7.5–7.99
1315:7.01–8.5
1309:7.0–7.49
1298:6.5–6.99
1284:6.0–6.49
1264:5.51–7.0
1258:5.5–5.99
1247:Low Cape
1241:5.0–5.49
1196:4.5–4.99
1185:4.0–4.49
1171:3.76–4.5
1163:Top cape
1157:Top cape
1148:3.5–3.99
1117:3.0–3.49
1083:2.51–3.0
1077:2.5–2.99
1045:2.0–2.49
1025:1.5–1.99
984:1.0–1.49
956:0.5–0.99
932:Colorless
909:Colorless
546:radiation
192:Simulants
171:Symbolism
2205:Category
2104:BBC News
2000:April 6,
1797:24373060
1789:21832322
1580:See also
1439:sapphire
1370:8.51–10
1132:Crystal
1126:Crystal
569:sulfides
565:graphite
475:infrared
441:nitrogen
378:gem blue
354:golconda
245:Category
150:De Beers
81:The 4 Cs
55:Material
40:Diamonds
2073:Reuters
1827:Bibcode
1769:Bibcode
1716:Bibcode
1489:removed
1474:sources
1443:emerald
1342:Yellow
922:0–0.75
916:0–0.49
849:Status:
841:current
838:Status:
830:current
827:Status:
819:current
816:Status:
805:Status:
797:current
794:Status:
786:current
783:Status:
664:clarity
555:of the
493:Type II
384:, etc.
266:diamond
255:Commons
166:History
94:Clarity
2190:
2154:18 May
2128:18 May
1965:
1876:Forbes
1795:
1787:
1744:
1726:
1679:
1652:
1063:White
1057:White
1054:White
965:River
945:Jager
939:White
936:River
812:CIBJO
763:, and
666:, and
471:canary
461:yellow
435:Type I
362:jagers
243:
1904:CIBJO
1815:(PDF)
1793:S2CID
1742:S2CID
1704:(PDF)
1617:. BBC
1441:, or
1270:Cape
1225:Cape
1216:Cape
874:grade
538:green
526:boron
511:brown
509:, or
466:brown
444:atoms
429:types
382:brown
358:river
274:color
272:, or
205:Theft
99:Color
89:Carat
2188:ISBN
2156:2016
2130:2016
2085:2009
2054:2020
2046:Idex
2028:2016
2002:2016
1963:ISBN
1785:PMID
1677:ISBN
1650:ISBN
1623:2017
1472:any
1470:cite
1435:ruby
1406:10+
1403:10+
1389:9.5
1378:9.0
1361:8.5
1350:8.0
1333:7.5
1306:7.0
1295:6.5
1281:6.0
1255:5.5
1238:5.0
1193:4.5
1182:4.0
1145:3.5
1114:3.0
1074:2.5
1042:2.0
1022:1.5
981:1.0
953:0.5
823:IDC
801:AGS
790:AGS
779:GIA
522:blue
503:pink
477:and
366:cape
23:The
1908:IDC
1900:AGS
1896:AGI
1892:GIA
1835:doi
1777:doi
1734:doi
1576:).
1574:SFr
1483:by
1400:10
1367:10
687:IGI
670:).
668:cut
609:by
567:or
507:red
489:).
455:in
338:AAA
326:III
288:or
270:hue
104:Cut
2207::
2174:.
2146:.
2120:.
2102:.
2071:.
2044:.
2019:.
1993:.
1946:^
1931:^
1874:.
1855:.
1833:.
1823:11
1821:.
1817:.
1791:.
1783:.
1775:.
1765:21
1763:.
1740:.
1732:.
1722:.
1712:42
1710:.
1706:.
1691:^
1648:.
1646:19
1437:,
1416:Z
1411:Y
1397:X
1386:W
1375:V
1358:U
1347:T
1325:S
1312:9
1303:R
1292:Q
1278:P
1261:8
1252:O
1230:N
1199:7
1190:M
1179:L
1168:6
1137:K
1120:5
1111:J
1080:4
1071:I
1048:3
1039:H
1014:G
1006:2
978:F
970:1
950:E
919:0
913:0
905:D
759:,
755:,
751:,
662:,
548:.
505:,
380:,
376:,
372:,
368:,
364:,
360:,
356:,
348:,
344:,
340:;
336:,
334:AA
332:,
328:;
324:,
322:II
320:,
2196:.
2158:.
2132:.
2106:.
2087:.
2056:.
2030:.
2004:.
1969:.
1878:.
1841:.
1837::
1829::
1799:.
1779::
1771::
1748:.
1736::
1718::
1685:.
1658:.
1625:.
1510:)
1504:(
1499:)
1495:(
1491:.
1477:.
765:M
761:K
757:I
753:G
749:E
707:Z
699:K
695:Z
691:D
632:)
626:(
621:)
617:(
603:.
499:×
483:×
350:C
346:B
342:A
330:A
318:I
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