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0.91ct Moissanite (Round, 6.23×6.23mm, White) vs 1ct Diamond (Round, 6.24×6.24mm, Red)


Quick summary: When looked from above (face-up position), 1ct Colored Diamond (6.24×6.24mm, round cut) appears 0.3% larger than 0.91ct Moissanite (6.23×6.23mm, round cut). See below how they compare side-by-side on a ring and finger.

0.91ct Moissanite (round cut)
vs
 1ct Diamond (round cut)
white
 
red
6.23×6.23 mm 6.24×6.24 mm
actual size
Actual size of 0.91ct Moissanite (round cut, 6.23×6.23mm, White color)   Actual size of 1ct Diamond (round cut, 6.24×6.24mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.91ct Moissanite (round cut, 6.23×6.23mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 1ct Diamond (round cut, 6.24×6.24mm) 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 37%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.91ct Moissanite Round (6.23×6.23mm, White) and 1ct Diamond Round (6.24×6.24mm, 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, Diamond will face-up smaller than Moissanite for a given carat weight, because it has higher specific gravity (3.52 vs. 3.22 - this means it's "heavier" compared to Moissanite 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.


0.91 Ct Moissanite (Round) 1 Ct Colored Diamond (Round)
6.23×6.23 mm vs 6.24×6.24 mm
30.48 mm²   30.58 mm²
Face-up size outline for 1ct Diamond (6.24×6.24mm, round cut)
Face-up size outline for 0.91ct Moissanite (6.23×6.23mm, round cut)
0.91ct Moissanite Round (6.23×6.23mm)
1ct Colored Diamond Round (6.24×6.24mm)
Difference: 0.3% (0.1 mm²)
1ct Colored Diamond (Round, 6.24×6.24mm) has approx. 0.3% more face-up area than 0.91ct Moissanite (Round, 6.23×6.23mm).


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