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1.5ct Sinhalite (Round, 7.17×7.17mm, Light Brown) vs 1.5ct Sunstone (Round, 7.85×7.85mm, Orangey Red)


Quick summary: When looked from above (face-up position), 1.5ct Sunstone (7.85×7.85mm, round cut) appears 20% larger than 1.5ct Sinhalite (7.17×7.17mm, round cut). See below how they compare side-by-side on a ring and finger.

1.5ct Sinhalite (round cut)
vs
 1.5ct Sunstone (round cut)
light brown
 
orangey red
7.17×7.17 mm 7.85×7.85 mm
actual size
Actual size of 1.5ct Sinhalite (round cut, 7.17×7.17mm, Light Brown color)   Actual size of 1.5ct Sunstone (round cut, 7.85×7.85mm, Orangey Red color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Brown 1.5ct Sinhalite (round cut, 7.17×7.17mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orangey Red 1.5ct Sunstone (round cut, 7.85×7.85mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 43% vs 47%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.5ct Sinhalite Round (7.17×7.17mm, Light Brown) and 1.5ct Sunstone Round (7.85×7.85mm, Orangey Red) as they would appear on a ring and finger. Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.

Where to buy?

For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Face-up Size

All things being equal, Sinhalite will face-up smaller than Sunstone for a given carat weight, because it has higher specific gravity (3.48 vs. 2.65 - this means it's "heavier" compared to Sunstone of the same size). Face-up size also depends heavily on the proportions of the cut.

Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.


1.5 Ct Sinhalite (Round) 1.5 Ct Sunstone (Round)
7.17×7.17 mm vs 7.85×7.85 mm
40.38 mm²   48.4 mm²
Face-up size outline for 1.5ct Sunstone (7.85×7.85mm, round cut)
Face-up size outline for 1.5ct Sinhalite (7.17×7.17mm, round cut)
1.5ct Sinhalite Round (7.17×7.17mm)
1.5ct Sunstone Round (7.85×7.85mm)
Difference: 20% (8.02 mm²)
1.5ct Sunstone (Round, 7.85×7.85mm) has approx. 20% more face-up area than 1.5ct Sinhalite (Round, 7.17×7.17mm).


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