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1.25ct Sinhalite (Radiant, 6.22×6.22mm, Light Brown) vs 1.25ct Sunstone (Radiant, 6.81×6.81mm, Orangey Red)


Quick summary: When looked from above (face-up position), 1.25ct Sunstone (6.81×6.81mm, radiant cut) appears 20% larger than 1.25ct Sinhalite (6.22×6.22mm, radiant cut). See below how they compare side-by-side on a ring and finger.

1.25ct Sinhalite (radiant cut)
vs
 1.25ct Sunstone (radiant cut)
light brown
 
orangey red
6.22×6.22 mm 6.81×6.81 mm
actual size
Actual size of 1.25ct Sinhalite (radiant cut, 6.22×6.22mm, Light Brown color)   Actual size of 1.25ct Sunstone (radiant cut, 6.81×6.81mm, 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 (radiant cut, 6.22×6.22mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orangey Red 1.25ct Sunstone (radiant cut, 6.81×6.81mm) 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
 37% vs 41%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.25ct Sinhalite Radiant (6.22×6.22mm, Light Brown) and 1.25ct Sunstone Radiant (6.81×6.81mm, 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 (Radiant) 1.25 Ct Sunstone (Radiant)
6.22×6.22 mm vs 6.81×6.81 mm
36.75 mm²   44.06 mm²
Face-up size outline for 1.25ct Sunstone (6.81×6.81mm, radiant cut)
Face-up size outline for 1.25ct Sinhalite (6.22×6.22mm, radiant cut)
1.25ct Sinhalite Radiant (6.22×6.22mm)
1.25ct Sunstone Radiant (6.81×6.81mm)
Difference: 20% (7.31 mm²)
1.25ct Sunstone (Radiant, 6.81×6.81mm) has approx. 20% more face-up area than 1.25ct Sinhalite (Radiant, 6.22×6.22mm).


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