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Stone | Refractive Index | Specific Gravity | Hardness | Toughness | Enhancements | Enhancement Frequency | Enhancement Stability | Care Tip | Birthstone Month | Anniversary Year |
|---|---|---|---|---|---|---|---|---|---|---|
Ruby | 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 | July | 15th & 40th |
Anniversary Year(s):
15th & 40th
Birthstone Month:
July
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:
Ruby
Birthstone for the Month of:
July
Ruby is the red variety of the gem species corundum. All other colors are classified as sapphire. The name Ruby is derived from the Latin word "ruber" meaning red-the color of passion. Historically referred to as the King of Gems, royal rubies today are designated as the birthstone of July and the 15th and 40th wedding anniversaries
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