6.5 Carat Sinhalite (Marquise, 19×9.5mm, Light Brown)
Color:
Actual size is set for screen
How big is a 6.5 carat marquise-cut Sinhalite?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 6.5ct marquise-cut Sinhalite would be around 19×9.5 mm (±6%). The lw ratio of this Sinhalite is 2. See below 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 |
57 % |
|
Saved...
|
|
|
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:
|
Sinhalite |
|
Shape:
|
Marquise |
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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
|
3.48 |
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Carat weight:
|
6.5 ct |
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Gram weight:
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1.3 g (0.0459 ounces) |
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Points:
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650 pts |
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Length:
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19 mm |
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Width:
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9.5 mm |
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Est. face-up size:
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128.16 mm² |
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Volume:
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373.56 mm³ |
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Length-to-width ratio:
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2 |
|
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:
- 1ct Sinhalite (Marquise, Light Brown, 10.34 x 5.17) vs. 2ct Sinhalite (Marquise, Light Brown, 13.02 x 6.51)
- 1ct Sinhalite (Marquise, Light Brown, 10.34 x 5.17) vs. 2ct Sinhalite (Marquise, Light Brown, 12 x 6)
- 1ct Sinhalite (Marquise, Light Brown, 10 x 5) vs. 2ct Sinhalite (Marquise, Light Brown, 12 x 6)
- 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)