30 Carat Quartz (Marquise, 34.66×17.33mm, Brown)
Color:
Actual size is set for screen
How big is a 30 carat marquise-cut Quartz?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 30ct marquise-cut Quartz would be around 34.66×17.33 mm (±6%). The lw ratio of this Quartz 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 |
103 % |
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Saved...
|
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Ring diameter:
16.9 mm
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Additional Info
Quartz (named after a Slavic word for "hard") is one of the most common minerals on earth. Many beautiful and affordable gemstones come from Quartz, two of the most popular being Amethyst and Citrine. Quartz occurs in a broad range of colors.
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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Quartz |
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Shape:
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Marquise |
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Chemical Formula:
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SiO2 |
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Crystal Structure:
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Hexagonal |
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Hardness:
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7 |
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Specific Gravity
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2.65 |
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Carat weight:
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30 ct |
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Gram weight:
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6 g (0.2116 ounces) |
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Points:
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3000 pts |
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Length:
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34.66 mm |
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Width:
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17.33 mm |
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Est. face-up size:
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426.47 mm² |
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Volume:
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2264.15 mm³ |
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Length-to-width ratio:
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2 |
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Refractive Index:
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1.54 - 1.55 |
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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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No special or unusual care |
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Color:
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Quartz can be found in the following colors:
                               
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Birthstone:
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Quartz is a birthstone for the month of April |
Popular comparisons:
- 7ct Quartz (Marquise, Dark Yellowish Green, 27 x 10) vs. 2.96ct Quartz (Marquise, Dark Yellowish Green, 17 x 6.9)
- 1.74ct Quartz (Marquise, Dark Yellowish Green, 10.8 x 7.64) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1.4ct Quartz (Marquise, Orangey Red, 12.66 x 6.33) vs. 1.7ct Ruby (Marquise, Red, 11.78 x 5.89)
- 2.5ct Quartz (Marquise, Dark Brown, 14 x 7) vs. 1.01ct Citrine (Pear, Light Orange, 9 x 6)
- 3ct Quartz (Marquise, Orangey Red, 16.32 x 8.16) vs. 15ct Quartz (Marquise, Orangey Red, 27.92 x 13.96)
- 5ct Quartz (Marquise, Light Orange, 19.36 x 9.68) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 4.5ct Quartz (Marquise, Light Orange, 18.7 x 9.35) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 0.9ct Quartz (Marquise, Orangey Red, 10.94 x 5.47) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)