0.75 Carat Spinel (Round, 5.63mm, Red)
Color:
Actual size is set for screen
How big is a 0.75 carat round-cut Spinel?
It depends on the cut proportions, but typically a 0.75ct round-cut Spinel would measure around 5.63 mm (±4%) in diameter. You can check the finger coverage in the simulator below.
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 |
34 % |
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Saved...
|
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Ring diameter:
16.9 mm
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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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Round |
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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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0.75 ct |
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Gram weight:
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0.15 g (0.0053 ounces) |
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Points:
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75 pts |
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Length:
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5.63 mm |
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Width:
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5.63 mm |
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Average diameter:
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5.63 mm |
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Est. face-up size:
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24.89 mm² |
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Volume:
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41.67 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:
- 0.75ct Spinel (Round, Red, 5.63 x 5.63) vs. 0.75ct Diamond (Round, White, 5.91 x 5.91)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 3.7ct Spinel (Round, Red, 9.58 x 9.58) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1.35ct Spinel (Round, Red, 6.84 x 6.84) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 5ct Spinel (Round, Red, 10.59 x 10.59) vs. 5ct Alexandrite (Round, Light Green , 10.49 x 10.49)
- 1ct Spinel (Round, Red, 6.19 x 6.19) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.4ct Spinel (Round, Red, 4.56 x 4.56) vs. 0.07ct Diamond (Round, White, 2.68 x 2.68)
- 2ct Spinel (Round, Light Orange, 7.5 x 7.5) vs. 2ct Spinel (Round, Light Orange, 7 x 7)