2.5 Carat Topaz Oval (10.7×7.13mm, Blue)
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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
Topaz is a gemstone of many colors. It’s commonly found colorless (white) and then treated to achieve desired colors. Blue Topaz is the most common and popular color variety.
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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Topaz |
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Mineral Class:
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Topaz |
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Shape:
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Oval |
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Chemical Formula:
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Al2SiO4(F,OH)2 |
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Crystal Structure:
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Orthorhombic |
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Hardness:
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8 |
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Specific Gravity
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3.53 |
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Carat weight:
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2.5 ct |
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Gram weight:
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0.5 g (0.0176 ounces) |
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Points:
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250 pts |
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Length:
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10.7 mm |
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Width:
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7.13 mm |
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Est. face-up size:
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62.56 mm² |
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Volume:
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141.64 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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1.610 - 1.638 |
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Cleavage:
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1,3 - basal |
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Luster:
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Vitreous |
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Birefringence:
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0.014 |
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Wearability:
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Very good |
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Care Instructions:
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Avoid hard hits or drops |
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Color:
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Birthstone:
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Topaz is a birthstone for the month of December |
Popular comparisons:
- 2.5ct Topaz (Oval, Blue, 10.7 x 7.13) vs. 6.25ct Diamond (Round, White, 11.97 x 11.97)
- 2.5ct Topaz (Oval, Blue, 10.7 x 7.13) vs. 2.5ct Diamond (Emerald, White, 9.07 x 6.72)
- 2.5ct Topaz (Oval, Blue, 10.7 x 7.13) vs. 4ct Diamond (Emerald, White, 10.61 x 7.86)
- 2.5ct Topaz (Oval, Blue, 10.7 x 7.13) vs. 2.5ct Diamond (Oval, White, 11.01 x 7.34)
- 2.5ct Topaz (Oval, Blue, 10.7 x 7.13) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 6ct Topaz (Oval, Blue, 14.33 x 9.55) vs. 6ct Diamond (Oval, White, 14.75 x 9.83)
- 3ct Topaz (Oval, Blue, 11 x 9) vs. 4ct Topaz (Oval, Blue, 12 x 10)
- 30ct Topaz (Oval, Blue, 24.5 x 16.33) vs. 10ct Aquamarine (Emerald, Light Bluish Green, 15.69 x 11.62)
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