20 Carat Sinhalite (Trillion, 20.79×20.79mm, Light Brown)
Color:
Actual size is set for screen
How big is a 20 carat trillion-cut Sinhalite?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 20ct trillion-cut Sinhalite would be around 20.79×20.79 mm (±6%). Check how big it looks on a ring and finger.
Ring:
Skin tone:
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Ring width:
3.0 mm
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Saved...
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 |
124 % |
|
Saved...
|
|
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Ring diameter:
16.9 mm
|
Additional Info
Sinhalite is one of the more recently discovered gemstones of earth-tone brown colors. It was first discovered in Sri Lanka in early 1950's and was named after the country – Sinhala is a Sanskrit name for Sri Lanka.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Gem Details
|
Name:
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Sinhalite |
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Shape:
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Trillion |
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Chemical Formula:
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MgAlBO4 |
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Crystal Structure:
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Orthorhombic |
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Hardness:
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6-7 |
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Specific Gravity
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3.48 |
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Carat weight:
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20 ct |
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Gram weight:
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4 g (0.1411 ounces) |
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Points:
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2000 pts |
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Length:
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20.79 mm |
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Width:
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20.79 mm |
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Est. face-up size:
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267.98 mm² |
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Volume:
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1149.43 mm³ |
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Length-to-width ratio:
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1 |
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Refractive Index:
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1.665 - 1.712 |
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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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No special or unusual care |
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Color:
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Sinhalite can be found in the following colors:
 
|
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Birthstone:
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Sinhalite is not an official birthstone of any month |
Popular comparisons:
- 3ct Sinhalite (Trillion, Light Brown, 10.62 x 10.62) vs. 3ct Zircon (Cushion, Orange, 7.67 x 7.67)
- 40ct Sinhalite (Trillion, Light Brown, 26.19 x 26.19) vs. 40ct Emerald (Marquise, Green, 37.82 x 18.91)
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)
- 1.5ct Tourmaline (Round, Light Red, 7.45 x 7.45) vs. 1.5ct Sapphire (Round, Light Blue, 6.84 x 6.84)
- 1ct Kyanite (Oval, Blue, 7.77 x 5.18) vs. 1ct Tanzanite (Oval, Blue, 8.07 x 5.38)
- 1ct Aquamarine (Oval, Light Blue, 8 x 6) vs. 1ct Spinel (Oval, Gray, 8 x 6)
- 1.16ct Diamond (Round, White, 6.82 x 6.85) vs. 1.2ct Diamond (Round, White, 6.82 x 6.86)
- 6ct Morganite (Cushion, Light Red, 12 x 10) vs. 3.5ct Sapphire (Cushion, Blue, 8.49 x 8.49)