3 Carat Spinel Cushion (11×8mm, Light Purple)
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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
Spinel is a rare gemstone that occurs in practically all colors. Because of similar properties red and blue Spinels have often been mistaken for Rubies and Sapphires. For example, the Black Prince's Ruby is actually a Spinel.
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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Spinel |
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Mineral Class:
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Spinel |
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Shape:
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Cushion |
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Chemical Formula:
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MgAl2O4 |
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Crystal Structure:
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Isometric |
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Hardness:
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7.5-8 |
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Specific Gravity
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3.6 |
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Carat weight:
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3 ct |
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Gram weight:
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0.6 g (0.0212 ounces) |
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Points:
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300 pts |
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Length:
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11 mm |
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Width:
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8 mm |
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Est. face-up size:
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79.2 mm² |
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Volume:
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166.67 mm³ |
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Length-to-width ratio:
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1.38 |
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Refractive Index:
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1.712 - 1.736 |
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Cleavage:
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None |
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Luster:
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Vitreous |
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Birefringence:
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None |
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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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Spinel is not an official birthstone for any month |
Popular comparisons:
- 3ct Spinel (Cushion, Purple, 8 x 7) vs. 1.88ct Spinel (Oval, Violet, 6.44 x 8.92)
- 1ct Spinel (Cushion, Gray, 5.79 x 5.79) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 2.45ct Spinel (Cushion, Gray, 7.81 x 7.81) vs. 0.67ct Diamond (Round, White, 5.69 x 5.69)
- 3ct Spinel (Cushion, Red, 8.35 x 8.35) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 6.05ct Spinel (Cushion, Violet, 11.07 x 11.04) vs. 6.05ct Sapphire (Cushion, Blue, 10.64 x 9.55)
- 4.33ct Spinel (Cushion, Dark Purple, 11.2 x 8.3) vs. 2.3ct Sapphire (Emerald, Blue, 8.42 x 6.24)
- 1ct Spinel (Cushion, Light Violet, 5.7 x 5.6) vs. 1.35ct Spinel (Cushion, Red, 6.8 x 6.8)
- 8.43ct Spinel (Cushion, Violet, 11.73 x 10.29) vs. 6.05ct Sapphire (Cushion, Blue, 10.64 x 9.55)
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