Original price was: $750.00.$550.00Current price is: $550.00.
Spinel is a magnesium aluminum oxide gemstone highly prized by gemologists and lapidaries for its brilliant luster, rich colors, and exceptional durability. Famous historically for mimicking fine rubies—such as the famous “Black Prince’s Ruby” in the British Crown Jewels—spinel is now recognized as one of the premier natural gemstones on the market.
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| Weight | 2.50 crt |
| Chemical Composition | Magnesium Aluminum Oxide |
| Crystal System | Isometric (Cubic) — forms distinctive octahedral crystals |
| Mohs Hardness | 8.0 (Extremely durable for high-wear jewelry) |
| Refractive Index (RI) | 1.718 (Singly refractive, giving clean, crisp light return) |
| Optic Character | Singly Refractive (SR) — No doubling of facets or pleochroism |
| Treatments | 99% Unheated/Untreated (One of the few gems rarely subjected to heat) |
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