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1.5ct Peridot (Round, 7.26×7.26mm, Yellowish Green) vs 6ct Topaz (Cushion, 10.59×10.59mm, Blue)


Quick summary: When looked from above (face-up position), 6ct Topaz (10.59×10.59mm, cushion cut) appears 2.4 times larger than 1.5ct Peridot (7.26×7.26mm, round cut). See below how they compare side-by-side on a ring and finger.

1.5ct Peridot (round cut)
vs
 6ct Topaz (cushion cut)
yellowish green
 
blue
7.26×7.26 mm 10.59×10.59 mm
actual size
Actual size of 1.5ct Peridot (round cut, 7.26×7.26mm, Yellowish Green color)   Actual size of 6ct Topaz (cushion cut, 10.59×10.59mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Yellowish Green 1.5ct Peridot (round cut, 7.26×7.26mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 6ct Topaz (cushion cut, 10.59×10.59mm) 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
 43% vs 63%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.5ct Peridot Round (7.26×7.26mm, Yellowish Green) and 6ct Topaz Cushion (10.59×10.59mm, Blue) 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, Topaz will face-up smaller than Peridot for a given carat weight, because it has higher specific gravity (3.53 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.


1.5 Ct Peridot (Round) 6 Ct Topaz (Cushion)
7.26×7.26 mm vs 10.59×10.59 mm
41.4 mm²   100.93 mm²
Face-up size outline for 6ct Topaz (10.59×10.59mm, cushion cut)
Face-up size outline for 1.5ct Peridot (7.26×7.26mm, round cut)
1.5ct Peridot Round (7.26×7.26mm)
6ct Topaz Cushion (10.59×10.59mm)
Difference: 144% (59.53 mm²)
6ct Topaz (Cushion, 10.59×10.59mm) has approx. 144% more face-up area than 1.5ct Peridot (Round, 7.26×7.26mm). In other words, it's 2.44x larger.


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