Gemmology
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Sapphire

Most commonly refers to a blue gem variety of corundum, but other coloured varieties of corundum are also described as sapphire, except the natural red.

See:
Sapphire — specimen 0646
Sapphire — specimen 0646, photo © NMNHS

Material from ‘Repository’

9 specimens: 0263 — 0.18 ct, Sri Lanka; 0326 — 0.20 ct, Sri Lanka; 0640 — 0.20 ct, Madagascar; 0668 — 0.31 ct, Thailand; 0646 — 0.27 ct, Madagascar; 0505 — 0.11 ct, Sri Lanka; 0223 — 0.36 ct, Madagascar, Ihorombe, Ilakaka; 0364 — 0.12 ct, no locality data; 0148 — 0.18 ct, no locality data.


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