0.25 Carat Ruby Oval (4.77×3.18mm, Red)
Color:
Actual size is set for screen
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 |
19 % |
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Saved...
|
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Ring diameter:
16.9 mm
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Additional Info
Ruby is a red to pink variety of the mineral Corundum. Its name comes from the Latin word "ruber", which simply means "red". Most Rubies on the market are heat-treated to enhance their color and clarity.
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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Ruby |
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Mineral Group:
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Corundum |
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Shape:
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Oval |
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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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0.25 ct |
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Gram weight:
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0.05 g (0.0018 ounces) |
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Points:
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25 pts |
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Length:
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4.77 mm |
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Width:
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3.18 mm |
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Est. face-up size:
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12.44 mm² |
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Volume:
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12.5 mm³ |
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Length-to-width ratio:
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1.5 |
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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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Ruby can be found in the following colors:
 
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Birthstone:
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Ruby is a birthstone for the month of July |
Popular comparisons:
- 0.25ct Ruby (Oval, Red, 4.77 x 3.18) vs. 1.25ct Sapphire (Oval, Blue, 8.15 x 5.43)
- 0.25ct Ruby (Oval, Red, 4.77 x 3.18) vs. 3ct Sapphire (Oval, Blue, 10.91 x 7.27)
- 0.25ct Ruby (Oval, Red, 4.77 x 3.18) vs. 0.7ct Tanzanite (Round, Blue, 5.66 x 5.66)
- 0.25ct Ruby (Oval, Red, 4.77 x 3.18) vs. 0.45ct Ruby (Cabochon, Red, 5.25 x 3.5)
- 0.25ct Ruby (Oval, Red, 4.77 x 3.18) vs. 0.5ct Ruby (Oval, Red, 6 x 4)
- 0.25ct Ruby (Oval, Red, 4.77 x 3.18) vs. 0.25ct Diamond (Pear, White, 5.69 x 3.43)
- 0.25ct Ruby (Oval, Red, 4.77 x 3.18) vs. 0.3ct Diamond (Oval, White, 5.43 x 3.62)
- 4ct Ruby (Oval, Red, 11 x 8.15) vs. 2.75ct Diamond (Oval, White, 11.37 x 7.58)