7 Carat Peridot (Marquise, 19.76×9.88mm, Yellowish Green)
Color:
Actual size is set for screen
How big is a 7 carat marquise-cut Peridot?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 7ct marquise-cut Peridot would be around 19.76×9.88 mm (±6%). The lw ratio of this Peridot is 2. 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 |
59 % |
|
Saved...
|
|
|
Ring diameter:
16.9 mm
|
Additional Info
Peridot is quite an affordable gem, found naturally in yellowish-green or olive-green color. Ancient Egyptians called it "the gem of the sun". Dark olive-green gems are the most valued.
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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Peridot |
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Mineral Group:
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Olivine |
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Shape:
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Marquise |
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Chemical Formula:
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(Mg,Fe)2SiO4 |
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Crystal Structure:
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Orthorhombic |
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Hardness:
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6.5 |
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Specific Gravity
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3.34 |
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Carat weight:
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7 ct |
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Gram weight:
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1.4 g (0.0494 ounces) |
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Points:
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700 pts |
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Length:
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19.76 mm |
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Width:
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9.88 mm |
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Est. face-up size:
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138.61 mm² |
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Volume:
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419.16 mm³ |
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Length-to-width ratio:
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2 |
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Refractive Index:
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1.65 - 1.69 |
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Luster:
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Vitreous |
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Wearability:
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Very good |
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Care Instructions:
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Should be worn gently |
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Color:
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Peridot can be found in the following colors:
    
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Birthstone:
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Peridot is a birthstone for the month of August |
Popular comparisons:
- 2.5ct Peridot (Marquise, Yellowish Green, 14.22 x 7.11) vs. 0.45ct Diamond (Baguette, Dark Blue, 5.54 x 3.69)
- 11.29ct Peridot (Marquise, Yellowish Green, 23.5 x 11.75) vs. 8.01ct Amethyst (Oval, Violet, 17.36 x 11.57)
- 5.5ct Peridot (Marquise, Yellowish Green, 18.48 x 9.24) vs. 4ct Aquamarine (Princess, Light Blue, 9.73 x 9.73)
- 2.65ct Peridot (Marquise, Yellowish Green, 14.5 x 7.25) vs. 1.45ct Peridot (Emerald, Yellowish Green, 7.67 x 5.68)
- 20ct Peridot (Marquise, Yellowish Green, 28.42 x 14.21) vs. 5ct Ruby (Oval, Red, 12.93 x 8.62)
- 22ct Peridot (Marquise, Yellowish Green, 29.34 x 14.67) vs. 6ct Ruby (Oval, Red, 13.74 x 9.16)
- 2.5ct Peridot (Marquise, Yellowish Green, 14.22 x 7.11) vs. 0.45ct Diamond (Baguette, Dark Blue, 6.85 x 3.25)
- 1ct Peridot (Marquise, Green, 10.48 x 5.24) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)