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Asterism on the surface of a blue star sapphire. A purple-pink star sapphire displaying asterism in a platinum ring.. An asterism (from Ancient Greek ἀστήρ (astḗr) 'star' and -ism) is a star-shaped concentration of light reflected or refracted from a gemstone.
National Museum of Natural History [3] DeLong Star Ruby: Burma: 1930 100.32 carats (20.064 g) American Museum of Natural History [4] Garrard's Red Ruby Burma: 40.63 carats (8.126 g) [5] Sunrise Ruby: 25.59 carats (5.118 g) [6] Carmen Lúcia Ruby: Burma: 1930s 23.1 carats (4.62 g) National Museum of Natural History [7] Elizabeth Taylor Ruby
The DeLong Star Ruby, a 100.32-carat (20.064 g) oval cabochon star ruby, was discovered in Burma in the 1930s. [1] It was sold by Martin Ehrmann to Edith Haggin DeLong for US$ 21,400, who then donated it to the American Museum of Natural History in New York City in 1937.
A star sapphire is a type of sapphire that exhibits a star-like phenomenon known as asterism; red stones are known as "star rubies". Star sapphires contain intersecting needle-like inclusions following the underlying crystal structure that causes the appearance of a six-rayed "star"-shaped pattern when viewed with a single overhead light source.
Star Black Anonymous owner [4] Star of India: Sri Lanka 563.4 carats (112.68 g) Star Blue-gray American Museum of Natural History, New York [5] Queen Marie of Romania: Sri Lanka 478.68 carats (95.736 g) Cushion Blue Anonymous owner [6] Logan Sapphire: Sri Lanka 422.99 carats (84.598 g) Cushion Blue National Museum of Natural History, Washington [7]
The piece—of natural pearl, tourmaline, ruby, onyx, and diamonds—was part of the collection of tastemaker Mica Ertegun, which is a partial explanation. But for jewelry experts the key to the ...