7 Carat Tourmaline (Pear, 17.8×10.72mm, Purple)
Color:
Actual size is set for screen
How big is a 7 carat pear-cut Tourmaline?
It depends on the cut parameters and length-to-width ratio, but a typical size of a 7ct pear-cut Tourmaline would be around 17.8×10.72 mm (±6%). The lw ratio of this Tourmaline is 1.66. 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 |
64 % |
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Saved...
|
|
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Ring diameter:
16.9 mm
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Additional Info
Tourmaline has been a very popular gemstone since antiquity. It comes in a wide variety of colors, many times with two, or even three colors at once. It got its name from the Sinhalese word "turamali", which means "stone of mixed 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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Tourmaline |
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Shape:
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Pear |
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Chemical Formula:
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N/a |
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Crystal Structure:
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Hexagonal |
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Hardness:
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7 - 7.5 |
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Specific Gravity
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3.06 |
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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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17.8 mm |
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Width:
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10.72 mm |
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Est. face-up size:
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139.3 mm² |
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Volume:
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457.52 mm³ |
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Length-to-width ratio:
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1.66 |
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Refractive Index:
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1.616 - 1.650 |
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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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Tourmaline can be found in the following colors:
                               
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Birthstone:
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Tourmaline is a birthstone for the month of October |
Popular comparisons:
- 1ct Tourmaline (Pear, Violet, 8.75 x 5.11) vs. 1ct Tourmaline (Trillion, Violet, 8 x 8)
- 2.5ct Tourmaline (Pear, Violet, 10.5 x 7.5) vs. 1.4ct Tourmaline (Pear, Violet, 8.7 x 6.5)
- 15ct Tourmaline (Pear, Light Orange, 22.29 x 13.43) vs. 4ct Ruby (Pear, Red, 13.18 x 7.94)
- 5.53ct Tourmaline (Pear, Violet, 15.99 x 9.63) vs. 1ct Tanzanite (Oval, Blue, 8.07 x 5.38)
- 3.33ct Tourmaline (Pear, Violet, 13.5 x 8.13) vs. 1.5ct Spinel (Marquise, Red, 11.7 x 5.85)
- 1ct Tourmaline (Pear, Violet, 9.05 x 5.45) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1.91ct Tourmaline (Pear, Violet, 14 x 7) vs. 2ct Emerald (Princess, Green, 7.72 x 7.72)
- 1.91ct Tourmaline (Pear, Violet, 14 x 7) vs. 0.9ct Emerald (Oval, Green, 8.33 x 5.55)