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9ct Diamond (Cushion, 12.12×12.12mm, White) vs 9ct Peridot (Cushion, 12.34×12.34mm, Yellowish Green)


Quick summary: When looked from above (face-up position), 9ct Peridot (12.34×12.34mm, cushion cut) appears 4% larger than 9ct Diamond (12.12×12.12mm, cushion cut). See below how they compare side-by-side on a ring and finger.

9ct Diamond (cushion cut)
vs
 9ct Peridot (cushion cut)
white
 
yellowish green
12.12×12.12 mm 12.34×12.34 mm
actual size
Actual size of 9ct Diamond (cushion cut, 12.12×12.12mm, White color)   Actual size of 9ct Peridot (cushion cut, 12.34×12.34mm, Yellowish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 9ct Diamond (cushion cut, 12.12×12.12mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Yellowish Green 9ct Peridot (cushion cut, 12.34×12.34mm) 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
 72% vs 74%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 9ct Diamond Cushion (12.12×12.12mm, White) and 9ct Peridot Cushion (12.34×12.34mm, Yellowish Green) 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 Peridot for a given carat weight, because it has higher specific gravity (3.52 vs. 3.34 - this means it's "heavier" compared to Peridot 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.


9 Ct Diamond (Cushion) 9 Ct Peridot (Cushion)
12.12×12.12 mm vs 12.34×12.34 mm
132.2 mm²   137.05 mm²
Face-up size outline for 9ct Peridot (12.34×12.34mm, cushion cut)
Face-up size outline for 9ct Diamond (12.12×12.12mm, cushion cut)
9ct Diamond Cushion (12.12×12.12mm)
9ct Peridot Cushion (12.34×12.34mm)
Difference: 4% (4.85 mm²)
9ct Peridot (Cushion, 12.34×12.34mm) has approx. 4% more face-up area than 9ct Diamond (Cushion, 12.12×12.12mm).


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