0.7 Carat Tanzanite Oval (7.16×4.77mm, 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 | |
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Ring |
Gold |
Skin tone |
Light |
Ring diameter |
16.9 mm |
Ring width |
3.0 mm |
Finger length |
64 mm |
Finger coverage |
29 % |
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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 Group:
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Zoisite |
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Shape:
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Oval |
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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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3.35 |
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Carat weight:
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0.7 ct |
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Gram weight:
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0.14 g (0.0049 ounces) |
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Points:
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70 pts |
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Length:
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7.16 mm |
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Width:
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4.77 mm |
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Est. face-up size:
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28.01 mm² |
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Volume:
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41.79 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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1.69 - 1.70 |
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Luster:
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Vitreous |
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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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Tanzanite can be found in the following colors:
 
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Birthstone:
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Tanzanite is a birthstone for the month of December |
Popular comparisons:
- 0.7ct Tanzanite (Oval, Blue, 7.16 x 4.77) vs. 1.56ct Sapphire (Emerald, Blue, 7.41 x 5.49)
- 0.7ct Tanzanite (Oval, Blue, 7.16 x 4.77) vs. 2.5ct Tanzanite (Round, Blue, 8.65 x 8.65)
- 0.7ct Tanzanite (Oval, Blue, 7.16 x 4.77) vs. 0.7ct Diamond (Oval, White, 7.2 x 4.8)
- 0.7ct Tanzanite (Oval, Blue, 7.16 x 4.77) vs. 1ct Tanzanite (Round, Blue, 6.37 x 6.37)
- 0.7ct Tanzanite (Oval, Blue, 7.16 x 4.77) vs. 0.6ct Tanzanite (Pear, Blue, 7.47 x 4.5)
- 0.7ct Tanzanite (Oval, Blue, 7.16 x 4.77) vs. 1.2ct Tanzanite (Oval, Blue, 8.57 x 5.71)
- 0.7ct Tanzanite (Oval, Blue, 7.16 x 4.77) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)
- 0.7ct Tanzanite (Oval, Blue, 7.16 x 4.77) vs. 0.5ct Diamond (Oval, White, 6.44 x 4.29)