2.31 Carat Tanzanite Round (8.43×8.43mm, Blue)
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64 mm
| Your settings | |
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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
Tanzanite is a blue variety of the mineral Zoisite. It got its name after the East African country of Tanzania, were it was discovered in 1967. Most of Tanzanite on the market today is heat treated.
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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Tanzanite |
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Mineral Class:
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Zoisite |
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Shape:
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Round |
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Chemical Formula:
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Ca2Al3(SiO4)3(OH) |
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Crystal Structure:
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Orthorhombic |
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Hardness:
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6-6.5 |
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Specific Gravity
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3.3 |
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Carat weight:
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2.31 ct |
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Gram weight:
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0.46 g (0.0163 ounces) |
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Points:
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231 pts |
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Length:
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8.43 mm |
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Width:
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8.43 mm |
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Average diameter:
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8.43 mm |
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Est. face-up size:
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55.81 mm² |
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Volume:
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140 mm³ |
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Length-to-width ratio:
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1 |
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Refractive Index:
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1.69 - 1.70 |
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Cleavage:
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1,1 |
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Luster:
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Vitreous |
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Birefringence:
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0.009 |
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Wearability:
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Very good |
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Care Instructions:
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gentle wear recommended |
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Color:
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|
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Birthstone:
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Tanzanite is a birthstone for the month of December |
Popular comparisons:
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Alexandrite (Round, Light Green , 6.14 x 6.14)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Tanzanite (Round, Dark Blue, 8.03 x 8.03) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 2ct Tanzanite (Round, Blue, 8.03 x 8.03) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 10ct Tanzanite (Round, Blue, 13.73 x 13.73) vs. 10ct Diamond (Round, White, 14 x 14)
- 1.5ct Tanzanite (Round, Blue, 7.3 x 7.3) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)
- 1ct Tanzanite (Round, Blue, 6.37 x 6.37) vs. 1ct Emerald (Round, Green, 6.37 x 6.37)
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