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12 Carat Amethyst (Emerald, 16.77×12.42mm, Violet)

Color:
violet
actual size
12ct Amethyst displayed at actual size of 16.77×12.42mm, (Emerald cut, Violet
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Actual size is set for screen


How big is a 12 carat emerald-cut Amethyst?

It depends on the cut parameters and length-to-width ratio, but a typical size of a 12ct emerald-cut Amethyst would be around 16.77×12.42 mm (±6%). The lw ratio of this Amethyst is 1.35. See below how big it looks on a ring and finger. 
Ring:
Skin tone:
Ring width: 3.0 mm
Saved...
Finger image
Ring on finger
Violet 12ct Amethyst (emerald cut) shown in real-world size of 16.77×12.42mm 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
 74 %
Saved...
Ring diameter: 16.9 mm
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Additional Info

Amethyst is a purple variety of quartz and a very popular and affordable gem. Its name originates from the Greek word amethystos which means "not drunken". Ancient Greeks believed it could prevent intoxication. Amethyst is considered the most valuable of quartz gemstones.

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

Gem Details

Name:
Amethyst
Mineral Group:
Quartz
Shape:
Emerald
Chemical Formula:
SiO2
Crystal Structure:
Hexagonal
Hardness:
7
Specific Gravity
2.65
Carat weight:
12 ct
Gram weight:
2.4 g (0.0847 ounces)
Points:
1200 pts
Length:
16.77 mm
Width:
12.42 mm
Est. face-up size:
193.7 mm²
Volume:
905.66 mm³
Length-to-width ratio:
1.35
Refractive Index:
1.54 - 1.55
Luster:
Vitreous
Wearability:
Very good
Care Instructions:
No special or unusual care
Color:
Amethyst can be found in the following colors:
Color Light VioletColor VioletColor Dark VioletColor Light PurpleColor PurpleColor Dark Purple
Birthstone:
Amethyst is a birthstone for the month of February

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