×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

24 Carat Benitoite (Emerald, 18.99×14.07mm, Blue)

Color:
blue
actual size
24ct Benitoite displayed at actual size of 18.99×14.07mm, (Emerald cut, Blue
Actual size is set for screen


How big is a 24 carat emerald-cut Benitoite?

It depends on the cut parameters and length-to-width ratio, but a typical size of a 24ct emerald-cut Benitoite would be around 18.99×14.07 mm (±6%). The lw ratio of this Benitoite 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
Blue 24ct Benitoite (emerald cut) shown in real-world size of 18.99×14.07mm 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
84 %
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2

Additional Info

Benitoite is a very rare blue gem first discovered in San Benito, California (hence the name). Benitoite is California state’s official gem.

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

Gem Details

Name:
Benitoite
Shape:
Emerald
Chemical Formula:
BaTiSi3O9
Crystal Structure:
Hexagonal
Hardness:
6 - 6.5
Specific Gravity
3.65
Carat weight:
24 ct
Gram weight:
4.8 g (0.1693 ounces)
Points:
2400 pts
Length:
18.99 mm
Width:
14.07 mm
Est. face-up size:
248.49 mm²
Volume:
1315.07 mm³
Length-to-width ratio:
1.35
Refractive Index:
1.75-1.80
Luster:
Vitreous
Wearability:
Care Instructions:
Color:
Benitoite can be found in the following colors:
Color WhiteColor Light BlueColor BlueColor Dark Blue
Birthstone:
Benitoite is not an official birthstone of any month

Popular comparisons: