標 本 名: | スピネル (Spinel)
| 化学組成: | MgAl2O4 | サ イ ズ: | | 重量: | | 透明: | LI1 (lightly included) (VS) | 数量: | | 産地: | Ratnapura, Sabaragamuwa Province, スリランカ (Sri Lanka) | Round blue spinel from Sri Lanka, with a very fine cutting, good symmetry and polish. The inclusions are very hard to see by naked eye, viewed by microscope or loupe you can see some tiny acicular inclusions. Beautiful stone with highly saturated blue coloration. 
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