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30 Carat Topaz Oval (24.5×16.33mm, Blue)

Color:
blue
actual size
30ct Topaz displayed at actual size of 24.5×16.33mm, (Oval cut, Blue
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Actual size is set for screen
Ring:
Skin tone:
Ring width: 3.0 mm
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Finger image
Ring on finger
Blue 30ct Topaz (oval cut) shown in real-world size of 24.5×16.33mm on a ring and finger
64 mm
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 97 %
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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

Name:
Topaz
Shape:
Oval
Chemical Formula:
Al2SiO4(F,OH)2
Crystal Structure:
Orthorhombic
Hardness:
8
Specific Gravity
3.53
Carat weight:
30 ct
Gram weight:
6 g (0.2116 ounces)
Points:
3000 pts
Length:
24.5 mm
Width:
16.33 mm
Est. face-up size:
328.07 mm²
Volume:
1699.72 mm³
Length-to-width ratio:
1.5
Refractive Index:
1.610 - 1.638
Luster:
Vitreous
Wearability:
Very good
Care Instructions:
Avoid hard hits or drops
Color:
Topaz can be found in the following colors:
Color WhiteColor Light RedColor RedColor Dark RedColor Orangey RedColor Light OrangeColor OrangeColor Light BrownColor BrownColor Dark BrownColor Light YellowColor YellowColor Light Yellowish GreenColor Yellowish GreenColor Dark Yellowish GreenColor Light Green Color GreenColor Dark GreenColor Light Bluish GreenColor Bluish GreenColor Dark Bluish GreenColor Light BlueColor BlueColor Dark BlueColor Light VioletColor VioletColor Dark VioletColor Light PurpleColor PurpleColor Dark PurpleColor Light GrayColor Gray
Birthstone:
Topaz is a birthstone for the month of December

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