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1.25ct Sinhalite (Cabochon, 7.73×5.15mm, Light Brown) vs 1.25ct Sunstone (Cabochon, 8.46×5.64mm, Orangey Red)


Quick summary: When looked from above (face-up position), 1.25ct Sunstone (8.46×5.64mm, cabochon cut) appears 20% larger than 1.25ct Sinhalite (7.73×5.15mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

1.25ct Sinhalite (cabochon cut)
vs
1.25ct Sunstone (cabochon cut)
light brown
 
orangey red
7.73×5.15 mm 8.46×5.64 mm
actual size
Actual size of 1.25ct Sinhalite (cabochon cut, 7.73×5.15mm, Light Brown color)   Actual size of 1.25ct Sunstone (cabochon cut, 8.46×5.64mm, 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 1.25ct Sinhalite (cabochon cut, 7.73×5.15mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orangey Red 1.25ct Sunstone (cabochon cut, 8.46×5.64mm) 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
31% vs 34%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.25ct Sinhalite Cabochon (7.73×5.15mm, Light Brown) and 1.25ct Sunstone Cabochon (8.46×5.64mm, 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.


1.25 Ct Sinhalite (Cabochon) 1.25 Ct Sunstone (Cabochon)
7.73×5.15 mm vs 8.46×5.64 mm
32.64 mm²   39.13 mm²
Face-up size outline for 1.25ct Sunstone (8.46×5.64mm, cabochon cut)
Face-up size outline for 1.25ct Sinhalite (7.73×5.15mm, cabochon cut)
1.25ct Sinhalite Cabochon (7.73×5.15mm)
1.25ct Sunstone Cabochon (8.46×5.64mm)
Difference: 20% (6.49 mm²)
1.25ct Sunstone (Cabochon, 8.46×5.64mm) has approx. 20% more face-up area than 1.25ct Sinhalite (Cabochon, 7.73×5.15mm).


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