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



Carat Weight Origin Cut-Shape

Present Owner

1 Prince’s Ruby 174.67 unknown unknown Bowers Museum
2 Rosser Reeves 138.70 Sri Lanka cabochon star NMNH Smithsonian
3 DeLong Star 100.32 Burma cabochon star AMNH New York
4 Nga Mauk 98.00 Mogok Burma unknown unknown
5 Kallahpyan 74.00 Mogok Burma unknown unknown
6 Maung Lin-1 70.00 Burma unknown unknown
7 J.P.Morgan-2 67.00 Sri Lanka asymmetrical AMNH New York
8 Mandalay 48.019 Mogok Burma cushion unknown
9 J.P.Morgan-1 47.00 Burma irregular cabchon AMNH New York
10 Unnamed 46.75 Burma oblong unknown
11 Maung Lin-2 45.00 Burma unknown unknown
12 Forster-2 39.50 Mogok Burma drop-shaped unknown
13 Unnamed-set world record price for single ruby 38.12 Burma cabochon sold 1993 by Burma Gems Enterprise
14 Unnamed 36.00 Burma unknown sold by Mindon Min for £30,000
15 Unnamed-set in ring 32.67 Mogok Burma oval sold 2000 by Christie’s
16 Forster-1 32.30 Mogok Burma cushion unknown
17 Unnamed-set in ring 32.08 Burma unknown sold 1989 by Sotheby’s
18 Star of Bharany 27.62 probably Burma oval cabochon star House of Louis XV
19 Unnamed-mounted in diamond pendant 27.37 Burma pear unknown
20 Unnamed-auction record for star ruby 26.40 Burma cabochon star sold 1994 by Christie’s
21 Unnamed-set in ring 25.70 unknown unknown sold 1988 by Christie’s
22 Unnamed-12-rayed star ruby 25.20 Sri Lanka cabochon star unknown
23 Peace Ruby 25.00 Mogok Burma round brilliant unknown
24 Unnamed 24.20 unknown cushion sold 1989 by Christie’s
25 Unnamed 24.13 Sri Lanka cabochon star unknown
26 Unnamed 22.00 Mogok Burma unknown bought by Indian dealer named Chodilla
27 Chhatrapati Manik Ruby 20.70 unknown probably Burma oval cabochon unknown
28 Nga Boh 20.00 Mogok Burma unknown unknown
29 Unnamed 16.51 Burma cushion sold 1993 by Sotheby’s
30 Unnamed-mounted in ring 16.20 Mogok Burma unknown sod 1990 by Christies
31 Alan Caplan 15.97 Mogok Burma cushion Sultan of Brunei
32 Unnamed 15.00 Burma pear private European collector
33 Unnamed 14.00 unknown cushion sold 1990 by Christie’s
34 Unnamed-mounted in ring 12.50 Burma unknown sold 1990 by Christie’s
35 Unnamed-mounted in ring 12.22 Burma cushion Sotheby’s 1995
36 Unnamed-mounted in ring 12.10 unknown unknown sold 1992 by Christie’s
37 Unnamed 10.35 unknown cushion sold 1988 Christie’s
38 Unnamed 10.11 Burma cushion sold 1994 Christie’s
39 Unnamed 10.01 unknown cushion sold 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.

1 thoughts on “List of faceted rubies greater than 10-carats in weight

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

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