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1 Carat Tourmaline Round (6.51×6.51mm, Dark Bluish Green)

Color:
dark bluish green
actual size
1ct Tourmaline displayed at actual size of 6.51×6.51mm, (Round cut, Dark Bluish Green
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Actual size is set for screen
Ring:
Skin tone:
Ring width: 3.0 mm
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Finger image
Ring on finger
Dark Bluish Green 1ct Tourmaline (round cut) shown in real-world size of 6.51×6.51mm on a ring and finger
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
 39 %
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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

Name:
Tourmaline
Shape:
Round
Chemical Formula:
N/a
Crystal Structure:
Hexagonal
Hardness:
7 - 7.5
Specific Gravity
3.06
Carat weight:
1 ct
Gram weight:
0.2 g (0.0071 ounces)
Points:
100 pts
Length:
6.51 mm
Width:
6.51 mm
Average diameter:
6.51 mm
Est. face-up size:
33.29 mm²
Volume:
65.36 mm³
Length-to-width ratio:
1
Refractive Index:
1.616 - 1.650
Luster:
Vitreous
Wearability:
Very good
Care Instructions:
No special or unusual care
Color:
Tourmaline can be found in the following colors:
Color WhiteColor Light RedColor RedColor Dark RedColor Orangey RedColor Light OrangeColor OrangeColor Light BrownColor BrownColor Dark BrownColor Light YellowColor YellowColor Light Yellowish GreenColor Yellowish GreenColor Dark Yellowish GreenColor Light Green Color GreenColor Dark GreenColor Light Bluish GreenColor Bluish GreenColor Dark Bluish GreenColor Light BlueColor BlueColor Dark BlueColor Light VioletColor VioletColor Dark VioletColor Light PurpleColor PurpleColor Dark PurpleColor Light GrayColor GrayColor Black
Birthstone:
Tourmaline is a birthstone for the month of October

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