List of faceted rubies greater than 10-carats in weight

List of gem-quality faceted rubies greater than 10-carats in weight arranged in descending order of weights

S/N

Name

Carat WeightOriginCut-Shape

Present Owner

1Prince’s Ruby174.67unknownunknownBowers Museum
2Rosser Reeves138.70Sri Lankacabochon starNMNH Smithsonian
3DeLong Star100.32Burmacabochon starAMNH New York
4Nga Mauk98.00Mogok Burmaunknownunknown
5Kallahpyan74.00Mogok Burmaunknownunknown
6Maung Lin-170.00Burmaunknownunknown
7J.P.Morgan-267.00Sri LankaasymmetricalAMNH New York
8Mandalay48.019Mogok Burmacushionunknown
9J.P.Morgan-147.00Burmairregular cabchonAMNH New York
10Unnamed46.75Burmaoblongunknown
11Maung Lin-245.00Burmaunknownunknown
12Forster-239.50Mogok Burmadrop-shapedunknown
13Unnamed-set world record price for single ruby38.12Burmacabochonsold 1993 by Burma Gems Enterprise
14Unnamed36.00Burmaunknownsold by Mindon Min for £30,000
15Unnamed-set in ring32.67Mogok Burmaovalsold 2000 by Christie’s
16Forster-132.30Mogok Burmacushionunknown
17Unnamed-set in ring32.08Burmaunknownsold 1989 by Sotheby’s
18Star of Bharany27.62probably Burmaoval cabochon starHouse of Louis XV
19Unnamed-mounted in diamond pendant27.37Burmapearunknown
20Unnamed-auction record for star ruby26.40Burmacabochon starsold 1994 by Christie’s
21Unnamed-set in ring25.70unknownunknownsold 1988 by Christie’s
22Unnamed-12-rayed star ruby25.20Sri Lankacabochon starunknown
23Peace Ruby25.00Mogok Burmaround brilliantunknown
24Unnamed24.20unknowncushionsold 1989 by Christie’s
25Unnamed24.13Sri Lankacabochon starunknown
26Unnamed22.00Mogok Burmaunknownbought by Indian dealer named Chodilla
27Chhatrapati Manik Ruby20.70unknown probably Burmaoval cabochonunknown
28Nga Boh20.00Mogok Burmaunknownunknown
29Unnamed16.51Burmacushionsold 1993 by Sotheby’s
30Unnamed-mounted in ring16.20Mogok Burmaunknownsod 1990 by Christies
31Alan Caplan15.97Mogok BurmacushionSultan of Brunei
32Unnamed15.00Burmapearprivate European collector
33Unnamed14.00unknowncushionsold 1990 by Christie’s
34Unnamed-mounted in ring12.50Burmaunknownsold 1990 by Christie’s
35Unnamed-mounted in ring12.22BurmacushionSotheby’s 1995
36Unnamed-mounted in ring12.10unknownunknownsold 1992 by Christie’s
37Unnamed10.35unknowncushionsold 1988 Christie’s
38Unnamed10.11Burmacushionsold 1994 Christie’s
39Unnamed10.01unknowncushionsold 1989 Christie’s

Above is a list of gem-quality faceted rubies greater than 10-carats in weight, arranged in descending order of weights. In this list the number of rubies greater than 100-carats in weight are only three. The number of rubies between 50-100 carats in weight are only four, and the number of rubies between 10-50 carats in weight are 32. Thus as the size of the rubies decrease the frequency increases. If we can have another category of less than 10-carats in weight the frequency will be even much greater than 32. The obvious conclusion we can derive from this observation is that rubies are generally restricted in size. Rubies of more than 100 carats in weight are extremely rare. The main reason for this is that chromium atoms present in the crystal lattice of ruby, that are responsible for the red color of rubies, also interfere with the growth of the crystals, causing cracks and fissures in the crystal. Thus it is extremely rare for a natural ruby to grow to enormous sizes without the crystal structure being disturbed. The presence of flaws and inclusions in rubies is a common occurrence and is a hallmark of its natural origin.

Another important observation that can be made from the above table is that out of 39 rubies listed 32 rubies are of Burmese origin, and only 4 rubies are of Sri Lankan origin. This is more than enough statistical evidence to show that Burma (Myanmar) is the premier source of rubies in the world. Out of the four Sri Lankan rubies listed three are star rubies. In fact Sri Lanka is the main source country in the world renowned for its star rubies, followed by Burma. Out of six star rubies listed 3 are from Sri Lanka and the other three are from Burma.

Out of the 39 rubies listed 11 are of Mogok origin, and the remaining are from other regions of Burma, Sri Lanka, or of unknown origin. This clearly shows that the Mogok region of Burma had been one of the main sources of Ruby in the world.

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  1. Pingback: Prince’s Ruby at the Bowers Museum | Internet Stones.COM-Jewelry and Mineral Blog

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