6.5 Carat Ruby (Oval, 14.31×9.54mm, Red)
Color:
Actual size is set for screen
How big is a 6.5 carat oval-cut Ruby?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 6.5ct oval-cut Ruby would be around 14.31×9.54 mm (±6%). The lw ratio of this Ruby is 1.5. 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...
|
|
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Ring diameter:
16.9 mm
|
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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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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14.31 mm |
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Width:
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9.54 mm |
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Est. face-up size:
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111.94 mm² |
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Volume:
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325 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:
- 4ct Ruby (Oval, Red, 11 x 8.15) vs. 2.75ct Diamond (Oval, White, 11.37 x 7.58)
- 2ct Ruby (Oval, Red, 9.53 x 6.35) vs. 1.13ct Diamond (Round, White, 6.77 x 6.77)
- 0.65ct Ruby (Oval, Red, 6.56 x 4.37) vs. 1.2ct Diamond (Round, White, 6.4 x 6.4)
- 1ct Ruby (Oval, Red, 7 x 5) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)
- 3ct Ruby (Oval, Red, 10.91 x 7.27) vs. 3ct Sapphire (Oval, Blue, 10.91 x 7.27)
- 1.2ct Ruby (Oval, Red, 8.65 x 6.61) vs. 1.2ct Ruby (Round, Red, 6.5 x 6.5)
- 15ct Ruby (Oval, Red, 18.66 x 12.44) vs. 14ct Ruby (Oval, Red, 18.23 x 12.15)
- 7ct Ruby (Oval, Red, 14.48 x 9.65) vs. 4ct Diamond (Cushion, White, 9.25 x 9.25)
Use the simulator on this page to play around with different ring and finger configurations.