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28 Carat Benitoite (Princess, 16.44×16.44mm, Blue)

Color:
blue
actual size
28ct Benitoite displayed at actual size of 16.44×16.44mm, (Princess cut, Blue
Actual size is set for screen


How big is a 28 carat princess-cut Benitoite?

It depends on the cut parameters, but a typical size of a 28ct princess-cut Benitoite would be around 16.44×16.44 mm (±6%). You can check how big it looks on a ring and finger below. 
Ring:
Skin tone:
Ring width: 3.0 mm
Saved...
Finger image
Ring on finger
Blue 28ct Benitoite (princess cut) shown in real-world size of 16.44×16.44mm 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
98 %
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:
Princess
Chemical Formula:
BaTiSi3O9
Crystal Structure:
Hexagonal
Hardness:
6 - 6.5
Specific Gravity
3.65
Carat weight:
28 ct
Gram weight:
5.6 g (0.1975 ounces)
Points:
2800 pts
Length:
16.44 mm
Width:
16.44 mm
Est. face-up size:
270.27 mm²
Volume:
1534.25 mm³
Length-to-width ratio:
1
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

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