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40 Carat Emerald Trillion (27.4×27.4mm, Green)

Color:
green
actual size
40ct Emerald displayed at actual size of 27.4×27.4mm, (Trillion cut, 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
Green 40ct Emerald (trillion cut) shown in real-world size of 27.4×27.4mm 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
 163 %
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Ring diameter: 16.9 mm
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Additional Info

Emerald is a green variety of Beryl mineral family. Its name comes from the French word "esmeralde", which came from the Greek word "smaragdos". The latter basically means "green gemstone". The most important factor in emerald's value is its color (vivid green is valued the most). The color in Emerald is caused by the presence or absence of chromium, vanadium, and iron.

Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Gem Details

Name:
Emerald
Mineral Group:
Beryl
Shape:
Trillion
Chemical Formula:
Be3Al2Si6O18
Crystal Structure:
Hexagonal
Hardness:
7.5 - 8.0
Specific Gravity
2.72
Carat weight:
40 ct
Gram weight:
8 g (0.2822 ounces)
Points:
4000 pts
Length:
27.4 mm
Width:
27.4 mm
Est. face-up size:
465.47 mm²
Volume:
2941.18 mm³
Length-to-width ratio:
1
Refractive Index:
1.57-1.58
Luster:
Vitreous
Wearability:
Excellent
Care Instructions:
No special care
Color:
Emerald can be found in the following colors:
Color Light Yellowish GreenColor Yellowish GreenColor Dark Yellowish GreenColor Light Green Color GreenColor Dark GreenColor Light Bluish GreenColor Bluish GreenColor Dark Bluish Green
Birthstone:
Emerald is a birthstone for the month of May

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