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4.5 Carat Sinhalite (Round, 10.34mm, Light Brown)

Color:
light brown
actual size
4.5ct Sinhalite displayed at actual size of 10.34×10.34mm, (Round cut, Light Brown
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How big is a 4.5 carat round-cut Sinhalite?

It depends on the cut proportions, but typically a 4.5ct round-cut Sinhalite would measure around 10.34 mm (±4%) in diameter. You can check the finger coverage in the simulator below. 
Ring:
Skin tone:
Ring width: 3.0 mm
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Finger image
Ring on finger
Light Brown 4.5ct Sinhalite (round cut) shown in real-world size of 10.34×10.34mm 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
 62 %
Saved...
Ring diameter: 16.9 mm
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Additional Info

Sinhalite is one of the more recently discovered gemstones of earth-tone brown colors. It was first discovered in Sri Lanka in early 1950's and was named after the country – Sinhala is a Sanskrit name for Sri Lanka.

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

Gem Details

Name:
Sinhalite
Shape:
Round
Chemical Formula:
MgAlBO4
Crystal Structure:
Orthorhombic
Hardness:
6-7
Specific Gravity
3.48
Carat weight:
4.5 ct
Gram weight:
0.9 g (0.0317 ounces)
Points:
450 pts
Length:
10.34 mm
Width:
10.34 mm
Average diameter:
10.34 mm
Est. face-up size:
83.97 mm²
Volume:
258.62 mm³
Length-to-width ratio:
1
Refractive Index:
1.665 - 1.712
Luster:
Vitreous
Wearability:
Very good
Care Instructions:
No special or unusual care
Color:
Sinhalite can be found in the following colors:
Color WhiteColor Light BrownColor Brown
Birthstone:
Sinhalite is not an official birthstone of any month

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