4 Carat Tourmaline Oval (13.07×8.71mm, Violet)
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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
Tourmaline has been a very popular gemstone since antiquity. It comes in a wide variety of colors, many times with two, or even three colors at once. It got its name from the Sinhalese word "turamali", which means "stone of mixed colors".
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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Tourmaline |
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Mineral Class:
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Tourmaline |
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Shape:
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Oval |
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Chemical Formula:
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N/a |
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Crystal Structure:
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Hexagonal |
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Hardness:
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7 - 7.5 |
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Specific Gravity
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3.1 |
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Carat weight:
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4 ct |
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Gram weight:
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0.8 g (0.0282 ounces) |
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Points:
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400 pts |
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Length:
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13.07 mm |
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Width:
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8.71 mm |
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Est. face-up size:
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93.35 mm² |
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Volume:
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258.06 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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1.616 - 1.650 |
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Cleavage:
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3,2 |
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Luster:
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Vitreous |
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Birefringence:
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0.018 |
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Wearability:
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Very good |
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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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Tourmaline is a birthstone for the month of October |
Popular comparisons:
- 4ct Tourmaline (Oval, Violet, 13.07 x 8.71) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 4ct Tourmaline (Oval, Violet, 13.07 x 8.71) vs. 2ct Emerald (Round, Green, 8.59 x 8.59)
- 4ct Tourmaline (Oval, Violet, 13.07 x 8.71) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 4ct Tourmaline (Oval, Violet, 13.07 x 8.71) vs. 12ct Topaz (Oval, Blue, 18.06 x 12.04)
- 4ct Tourmaline (Oval, Violet, 13.07 x 8.71) vs. 5ct Tourmaline (Oval, Violet, 14.09 x 9.39)
- 4ct Tourmaline (Oval, Violet, 13.07 x 8.71) vs. 3ct Tourmaline (Oval, Violet, 11.88 x 7.92)
- 4ct Tourmaline (Oval, Violet, 13.07 x 8.71) vs. 3.5ct Tourmaline (Oval, Violet, 12.5 x 8.33)
- 5.8ct Tourmaline (Oval, Violet, 14.79 x 9.86) vs. 8ct Sapphire (Oval, Blue, 15.12 x 10.08)
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