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Stone | Refractive Index | Specific Gravity | Hardness | Toughness | Enhancements | Enhancement Frequency | Enhancement Stability | Care Tip | Birthstone Month | Anniversary Year |
|---|---|---|---|---|---|---|---|---|---|---|
Alexandrite | 1.746-1.755 (+0.004, -0.006) | 3.73 (+/- 0.02) | 8.5 | Excellent | None Known | N/A | N/A | All major cleaning methods are safe; no special requirements | June | 18th |
Anniversary Year(s):
18th
Birthstone Month:
June
Care Tips:
All major cleaning methods are safe; no special requirements
Enhancement Stability:
N/A
Enhancement Frequency:
N/A
Enhancements:
None Known
Toughness:
Excellent
Hardness:
8.5
Specific Gravity:
3.73 (+/- 0.02)
1.746-1.755 (+0.004, -0.006)
Refractive Index:
Alexandrite
Birthstone for the Month of:
June
Alexandrite is the color change variety of the mineral species chrysoberyl. Often described as "emerald by day, ruby by night", this exceptionally rare gemstone's chameleon-like color change ability is a result of the way the mineral absorbs different wavelengths of light.
Cats-eye alexandrite has the addition of chatoyancy (cats-eye effect) to color change. Mined in Russia, Brazil and Sri Lanka, this phenomenal gemstone is the birthstone for June and is designated for the 55th wedding anniversary.
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