12 Carat Sapphire Oval (17.31×11.54mm, Blue)
Color:
Actual size is set for screen
Ring:
Skin tone:
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Ring width:
3.0 mm
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Saved...
64 mm
| Your settings | |
|---|---|
Ring |
Gold |
Skin tone |
Light |
Ring diameter |
16.9 mm |
Ring width |
3.0 mm |
Finger length |
64 mm |
Finger coverage |
69 % |
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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 Group:
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Corundum |
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Shape:
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Oval |
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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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12 ct |
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Gram weight:
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2.4 g (0.0847 ounces) |
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Points:
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1200 pts |
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Length:
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17.31 mm |
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Width:
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11.54 mm |
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Est. face-up size:
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163.8 mm² |
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Volume:
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600 mm³ |
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Length-to-width ratio:
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1.5 |
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Refractive Index:
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1.76 - 1.77 |
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Luster:
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Vitreous to adamantine |
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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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Sapphire can be found in the following colors:
                           
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Birthstone:
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Sapphire is a birthstone for the month of September |
Popular comparisons:
- 12ct Sapphire (Oval, Blue, 17.31 x 11.54) vs. 11ct Sapphire (Oval, Blue, 16.82 x 11.21)
- 12ct Sapphire (Oval, Blue, 17.31 x 11.54) vs. 12ct Diamond (Oval, White, 18.59 x 12.39)
- 12ct Sapphire (Oval, Blue, 17.31 x 11.54) vs. 6ct Sapphire (Oval, Blue, 13.74 x 9.16)
- 12ct Sapphire (Oval, Blue, 17.31 x 11.54) vs. 2.6ct Sapphire (Oval, Blue, 9 x 7)
- 12ct Sapphire (Oval, Blue, 17.31 x 11.54) vs. 10ct Sapphire (Oval, Blue, 16.29 x 10.86)
- 12ct Sapphire (Oval, Blue, 17.31 x 11.54) vs. 5.7ct Topaz (Oval, Blue, 14 x 10)
- 12ct Sapphire (Oval, Blue, 17.31 x 11.54) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 12ct Sapphire (Oval, Blue, 17.31 x 11.54) vs. 12ct Tanzanite (Oval, Blue, 18.47 x 12.31)