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Sunrise Ruby
The Sunrise Ruby is the world's most expensive ruby, most expensive coloured gemstone, and most expensive gemstone other than a diamond.〔〔 It is named after a poem of the same name, written by the 13th-century Sufi poet Rumi.
==Description==
It is a Burmese "pigeon blood" ruby mounted by Cartier and set between heptagon-shaped diamonds weighing and .〔
It is considered among the most rare of all gemstones.〔〔 The Swiss Gemmological Institute has described it as "a unique treasure of nature" and praised its "well-proportioned cut, highly attractive colour and fine purity".〔 The Gubelin Gem Lab in Zürich stated that "such a combination of characteristics is very rare in Burmese rubies of this size."〔 The global chairman of Sotheby's International Jewellery Division, David Bennett, when interviewed on the ruby, stated "during his 40 years in the industry, he has never before seen a ruby of this calibre".〔 In a Gubelin grading report it notes, "ruby is of Burmese origin" and that "its vivid but saturated color, poetically referred to as pigeon blood red, is due to a combination of well balanced trace elements in the stone, typical and characteristic for the finest rubies of Mogok." Gemstones of the same quality typically form in only small crystals making this one an "extremely rare" gem.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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