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1ct Sinhalite (Heart, 6.56×6.56mm, Light Brown) vs 1ct Sunstone (Heart, 7.18×7.18mm, Orangey Red)


Quick summary: When looked from above (face-up position), 1ct Sunstone (7.18×7.18mm, heart cut) appears 20% larger than 1ct Sinhalite (6.56×6.56mm, heart cut). See below how they compare side-by-side on a ring and finger.

1ct Sinhalite (heart cut)
vs
1ct Sunstone (heart cut)
light brown
 
orangey red
6.56×6.56 mm 7.18×7.18 mm
actual size
Actual size of 1ct Sinhalite (heart cut, 6.56×6.56mm, Light Brown color)   Actual size of 1ct Sunstone (heart cut, 7.18×7.18mm, 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 1ct Sinhalite (heart cut, 6.56×6.56mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orangey Red 1ct Sunstone (heart cut, 7.18×7.18mm) 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
39% vs 43%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1ct Sinhalite Heart (6.56×6.56mm, Light Brown) and 1ct Sunstone Heart (7.18×7.18mm, 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 Ct Sinhalite (Heart) 1 Ct Sunstone (Heart)
6.56×6.56 mm vs 7.18×7.18 mm
30.98 mm²   37.12 mm²
Face-up size outline for 1ct Sunstone (7.18×7.18mm, heart cut)
Face-up size outline for 1ct Sinhalite (6.56×6.56mm, heart cut)
1ct Sinhalite Heart (6.56×6.56mm)
1ct Sunstone Heart (7.18×7.18mm)
Difference: 20% (6.14 mm²)
1ct Sunstone (Heart, 7.18×7.18mm) has approx. 20% more face-up area than 1ct Sinhalite (Heart, 6.56×6.56mm).


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