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0.3ct Topaz (Oval, 5.28×3.52mm, Blue) vs 3.5ct Peridot (Oval, 8.5×11mm, Yellowish Green)


Quick summary: When looked from above (face-up position), 3.5ct Peridot (8.5×11mm, oval cut) appears 5 times larger than 0.3ct Topaz (5.28×3.52mm, oval cut). See below how they compare side-by-side on a ring and finger.

0.3ct Topaz (oval cut)
vs
 3.5ct Peridot (oval cut)
blue
 
yellowish green
5.28×3.52 mm 8.5×11 mm
actual size
Actual size of 0.3ct Topaz (oval cut, 5.28×3.52mm, Blue color)   Actual size of 3.5ct Peridot (oval cut, 8.5×11mm, Yellowish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.3ct Topaz (oval cut, 5.28×3.52mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Yellowish Green 3.5ct Peridot (oval cut, 8.5×11mm) 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
 21% vs 66%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.3ct Topaz Oval (5.28×3.52mm, Blue) and 3.5ct Peridot Oval (8.5×11mm, 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, 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.


0.3 Ct Topaz (Oval) 3.5 Ct Peridot (Oval)
5.28×3.52 mm vs 8.5×11 mm
15.24 mm²   76.67 mm²
Face-up size outline for 3.5ct Peridot (8.5×11mm, oval cut)
Face-up size outline for 0.3ct Topaz (5.28×3.52mm, oval cut)
0.3ct Topaz Oval (5.28×3.52mm)
3.5ct Peridot Oval (8.5×11mm)
Difference: 403% (61.43 mm²)
3.5ct Peridot (Oval, 8.5×11mm) has approx. 403% more face-up area than 0.3ct Topaz (Oval, 5.28×3.52mm). In other words, it's 5.03x larger.


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