Blue-green spinel is a rare and prized variety, offering a unique color ranging from turquoise blue to intense blue-green. This gemstone is particularly valued for its rarity and natural untreated beauty.
8硬度（满分 10）
Untreated (Natural)The vast majority of blue-green spinels on the market are entirely natural and untreated. This is the norm for this gemstone and a major advantage compared to sapphires and other corundums which are typically heated.
Synthetic IdentificationSynthetic blue-green spinels exist but are rare. A recognized laboratory certificate (GIA, GRS, SSEF) is recommended to confirm natural origin, especially for high-value stones.
Surface EnhancementNo surface enhancement treatments are commonly used for spinels. Stones can be cleaned and polished, but this does not constitute treatment.
