Cut gems of over 100 carats are not unknown. Burmese SapphiresĪlthough rubies are found with much greater frequency at Mogok (rubies form about 80-90% of the total output), sapphires may reach larger sizes. Color banding, so prominent in Ceylon stones, may be entirely absent in Burma sapphires. The key difference between Burma and Ceylon sapphires is saturation, with those from Burma possessing much more color in the stone. The best display a rich, intense, slightly violetish blue, but some are quite light, similar to those from Sri Lanka. Not all Burma sapphires are deep in color. This stone, an example of Mogok's finest product, was offered in the late 1980s in Bangkok for $10,000/ct.
21.09 carats of Burmese midnight-blue mystery. Coggin Brown, India's Mineral Wealth, 1955įigure 1. Speaking generally, Ceylon sapphires are too light and Siamese sapphires too dark, and it is more than probable that many of the best 'Ceylon' stones first saw the light of day from the mountainsides of the Mogok Stone Tract." "It has been stated that Burmese sapphires as a whole are usually too dark for general approval, but this is quite incorrect next to the Kashmir sapphires they are unsurpassed.
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