2.5 Carat Spinel (Trillion, 10.28×10.28mm, Red)
Color:
Actual size is set for screen
How big is a 2.5 carat trillion-cut Spinel?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 2.5ct trillion-cut Spinel would be around 10.28×10.28 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 |
61 % |
|
Saved...
|
|
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Ring diameter:
16.9 mm
|
Additional Info
Spinel is a rare gemstone that occurs in practically all colors. Because of similar properties, red and blue Spinels have often been mistaken for Rubies and Sapphires. For example, the Black Prince's Ruby is actually a Spinel.
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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Spinel |
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Shape:
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Trillion |
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Chemical Formula:
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MgAl2O4 |
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Crystal Structure:
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Isometric |
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Hardness:
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7.5-8 |
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Specific Gravity
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3.6 |
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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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10.28 mm |
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Width:
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10.28 mm |
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Est. face-up size:
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65.52 mm² |
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Volume:
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138.89 mm³ |
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Length-to-width ratio:
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1 |
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Refractive Index:
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1.712 - 1.736 |
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Luster:
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Vitreous |
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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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Spinel can be found in the following colors:
                               
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Birthstone:
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Spinel is not an official birthstone of any month |
Popular comparisons:
- 2ct Spinel (Trillion, Red, 9.17 x 9.17) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1ct Spinel (Trillion, Red, 7.28 x 7.28) vs. 1ct Sapphire (Trillion, Blue, 7.03 x 7.03)
- 2ct Spinel (Trillion, Violet, 9.17 x 9.17) vs. 0.5ct Diamond (Round, White, 5.16 x 5.16)
- 1.5ct Spinel (Trillion, Red, 8.33 x 8.33) vs. 1.2ct Emerald (Round, Green, 7.24 x 7.24)
- 6.7ct Spinel (Trillion, Red, 13.72 x 13.72) vs. 6.7ct Diamond (Cabochon, White, 13.47 x 8.98)
- 5ct Spinel (Trillion, Red, 12.45 x 12.45) vs. 5ct Sapphire (Trillion, Blue, 12.02 x 12.02)
- 2ct Spinel (Trillion, Red, 9.17 x 9.17) vs. 2ct Sapphire (Trillion, Blue, 8.86 x 8.86)
- 1.37ct Spinel (Trillion, Red, 8.09 x 8.09) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)