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1.97ct Peridot (Round, 7.95×7.95mm, Yellowish Green) vs 2.8ct Tourmaline (Emerald, 9×7mm, Dark Green)


Quick summary: When looked from above (face-up position), 2.8ct Tourmaline (9×7mm, emerald cut) appears 18% larger than 1.97ct Peridot (7.95×7.95mm, round cut). See below how they compare side-by-side on a ring and finger.

1.97ct Peridot (round cut)
vs
 2.8ct Tourmaline (emerald cut)
yellowish green
 
dark green
7.95×7.95 mm 9×7 mm
actual size
Actual size of 1.97ct Peridot (round cut, 7.95×7.95mm, Yellowish Green color)   Actual size of 2.8ct Tourmaline (emerald cut, 9×7mm, Dark Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Yellowish Green 1.97ct Peridot (round cut, 7.95×7.95mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Green 2.8ct Tourmaline (emerald cut, 9×7mm) 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
 48% vs 42%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.97ct Peridot Round (7.95×7.95mm, Yellowish Green) and 2.8ct Tourmaline Emerald (9×7mm, Dark 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, Peridot will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.34 vs. 3.06 - this means it's "heavier" compared to Tourmaline 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.


1.97 Ct Peridot (Round) 2.8 Ct Tourmaline (Emerald)
7.95×7.95 mm vs 9×7 mm
49.64 mm²   58.59 mm²
Face-up size outline for 2.8ct Tourmaline (9×7mm, emerald cut)
Face-up size outline for 1.97ct Peridot (7.95×7.95mm, round cut)
1.97ct Peridot Round (7.95×7.95mm)
2.8ct Tourmaline Emerald (9×7mm)
Difference: 18% (8.95 mm²)
2.8ct Tourmaline (Emerald, 9×7mm) has approx. 18% more face-up area than 1.97ct Peridot (Round, 7.95×7.95mm).


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