Mineral: | Spinel
| Chemical Formula: | MgAl2O4 | Size: | | Weight: | | Transparence: | LI1 (lightly included) (VS) | Quantity: | | Origin: | Ratnapura, Province of Sabaragamuwa, Sri Lanka | This is a bright blue faceted spinel with a slightly violet tint. Brilliancy and polish of the stone is very good. Depending on the natural in incandescent light the violet color is stronger or less visible. committed Chelsea filter the stone shows a strong red coloration probably caused by cobalt, but normally cobalt spinel's show at different coloration. 
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