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Stone | Refractive Index | Specific Gravity | Hardness | Toughness | Enhancements | Enhancement Frequency | Enhancement Stability | Care Tip | Birthstone Month | Anniversary Year |
|---|---|---|---|---|---|---|---|---|---|---|
Sapphire | 1.762-1.770 (+0.009, -0.005) | 4.00 (+/- 0.05) | 9 | Excellent | Heated to improve color | Commonly | Excellent | All major cleaning methods are safe | September | 5th & 45th |
Anniversary Year(s):
5th & 45th
Birthstone Month:
September
Care Tips:
All major cleaning methods are safe
Enhancement Stability:
Commonly
Enhancement Frequency:
Commonly
Enhancements:
Heated to improve color
Toughness:
Excellent
Hardness:
9
Specific Gravity:
4.00 (+/- 0.05)
1.762-1.770 (+0.009, -0.005)
Refractive Index:
Sapphire
Birthstone for the Month of:
September
This popular member of the gemstone species corundum is available in a rainbow of colors with the exception of red, which is ruby. Blue sapphire is the most popular of all colored gems. This versatile gem is very durable and available in an exciting array of colors, sizes and shapes, making it the perfect alternative to diamond for engagement rings. Sapphire is the birthstone for September and the 5th & 45th wedding anniversaries.
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