2.51 Carat Sapphire Emerald (8.35×6.4mm, Blue)
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64 mm
| Your settings | |
|---|---|
Ring |
Gold |
Skin tone |
Light |
Ring diameter |
16.9 mm |
Ring width |
3.0 mm |
Finger length |
64 mm |
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Saved...
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Ring diameter:
16.9 mm
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Additional Info
Sapphire got its name from the Greek word "sappheiros", which means "blue stone". Today, most people still associate Sapphires with the color blue, however, any gemstone quality Corundum that is not red (Ruby) is actually called Sapphire.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Gem Details
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Name:
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Sapphire |
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Mineral Class:
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Corundum |
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Shape:
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Emerald |
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Chemical Formula:
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Al2O3 |
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Crystal Structure:
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Hexagonal |
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Hardness:
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9 |
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Specific Gravity
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4 |
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Carat weight:
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2.51 ct |
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Gram weight:
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0.5 g (0.0177 ounces) |
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Points:
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251 pts |
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Length:
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8.35 mm |
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Width:
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6.4 mm |
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Est. face-up size:
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49.7 mm² |
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Volume:
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125.5 mm³ |
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Length-to-width ratio:
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1.3 |
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Refractive Index:
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1.76 - 1.77 |
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Cleavage:
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None |
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Luster:
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Vitreous to adamantine |
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Birefringence:
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0.0008 |
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Wearability:
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Excellent |
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Care Instructions:
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No special or unusual care |
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Color:
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Birthstone:
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Sapphire is a birthstone for the month of September |
Popular comparisons:
- 2.51ct Sapphire (Emerald, Blue, 8.35 x 6.4) vs. 2.17ct Sapphire (Emerald, Dark Bluish Green, 8.56 x 6.64)
- 2.51ct Sapphire (Emerald, Blue, 8.35 x 6.4) vs. 3.95ct Sapphire (Cushion, Blue, 10.23 x 6.86)
- 2.51ct Sapphire (Emerald, Blue, 8.35 x 6.4) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 2.51ct Sapphire (Emerald, Blue, 8.35 x 6.4) vs. 0.45ct Diamond (Round, White, 5.1 x 5.1)
- 2.51ct Sapphire (Emerald, Blue, 8.35 x 6.4) vs. 0.45ct Diamond (Round, White, 5 x 5)
- 2.51ct Sapphire (Emerald, Blue, 8.35 x 6.4) vs. 2.51ct Sapphire (Emerald, Blue, 9.5 x 7.5)
- 2.51ct Sapphire (Emerald, Blue, 8.35 x 6.4) vs. 2.1ct Sapphire (Oval, Blue, 7.71 x 6.99)
- 2.51ct Sapphire (Emerald, Blue, 8.35 x 6.4) vs. 8.23ct Amethyst (Oval, Light Violet, 15.9 x 12.7)
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