40 Carat Sapphire (Trillion, 25×25mm, Blue)
Color:
Actual size is set for screen
How big is a 40 carat trillion-cut Sapphire?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 40ct trillion-cut Sapphire would be around 25×25 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 |
148 % |
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Saved...
|
|
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Ring diameter:
16.9 mm
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Additional Info
Sapphire got its name from the Greek word "sappheiros", which means "blue stone". Today, most people still associate Sapphires with the color blue, however, any gemstone quality Corundum that is not red (Ruby) is actually called Sapphire.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Gem Details
|
Name:
|
Sapphire |
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Mineral Group:
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Corundum |
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Shape:
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Trillion |
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Chemical Formula:
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Al2O3 |
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Crystal Structure:
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Hexagonal |
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Hardness:
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9 |
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Specific Gravity
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4 |
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Carat weight:
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40 ct |
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Gram weight:
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8 g (0.2822 ounces) |
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Points:
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4000 pts |
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Length:
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25 mm |
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Width:
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25 mm |
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Est. face-up size:
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387.5 mm² |
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Volume:
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2000 mm³ |
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Length-to-width ratio:
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1 |
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Refractive Index:
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1.76 - 1.77 |
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Luster:
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Vitreous to adamantine |
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Wearability:
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Excellent |
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Care Instructions:
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No special or unusual care |
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Color:
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Sapphire can be found in the following colors:
                           
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Birthstone:
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Sapphire is a birthstone for the month of September |
Popular comparisons:
- 1.5ct Sapphire (Trillion, Violet, 8.05 x 8.05) vs. 1.52ct Diamond (Oval, White, 9.33 x 6.22)
- 2ct Sapphire (Trillion, Blue, 8.86 x 8.86) vs. 19ct Diamond (Princess, White, 14.7 x 14.7)
- 0.7ct Sapphire (Trillion, Blue, 6.24 x 6.24) vs. 0.7ct Diamond (Trillion, White, 6.87 x 6.87)
- 0.7ct Sapphire (Trillion, Blue, 7 x 5) vs. 0.7ct Diamond (Trillion, White, 6.87 x 6.87)
- 2ct Sapphire (Trillion, Blue, 8.86 x 8.86) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 0.4ct Sapphire (Trillion, Blue, 5.18 x 5.18) vs. 0.6ct Ruby (Cushion, Red, 4.72 x 4.72)
- 0.8ct Sapphire (Trillion, Blue, 6 x 6) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Sapphire (Trillion, Blue, 7.03 x 7.03) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)