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0.25ct Beryl (Round, 4.28×4.28mm, Orange) vs 0.25ct Tourmaline (Round, 4.12×4.12mm, Purple)


Quick summary: When looked from above (face-up position), 0.25ct Beryl (4.28×4.28mm, round cut) appears 8% larger than 0.25ct Tourmaline (4.12×4.12mm, round cut). See below how they compare side-by-side on a ring and finger.

0.25ct Beryl (round cut)
vs
 0.25ct Tourmaline (round cut)
orange
 
purple
4.28×4.28 mm 4.12×4.12 mm
actual size
Actual size of 0.25ct Beryl (round cut, 4.28×4.28mm, Orange color)   Actual size of 0.25ct Tourmaline (round cut, 4.12×4.12mm, Purple color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Orange 0.25ct Beryl (round cut, 4.28×4.28mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 0.25ct Tourmaline (round cut, 4.12×4.12mm) 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
 26% vs 25%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.25ct Beryl Round (4.28×4.28mm, Orange) and 0.25ct Tourmaline Round (4.12×4.12mm, Purple) 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, Tourmaline will face-up smaller than Beryl for a given carat weight, because it has higher specific gravity (3.06 vs. 2.72 - this means it's "heavier" compared to Beryl 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.


0.25 Ct Beryl (Round) 0.25 Ct Tourmaline (Round)
4.28×4.28 mm vs 4.12×4.12 mm
14.39 mm²   13.33 mm²
Face-up size outline for 0.25ct Beryl (4.28×4.28mm, round cut)
Face-up size outline for 0.25ct Tourmaline (4.12×4.12mm, round cut)
0.25ct Beryl Round (4.28×4.28mm)
0.25ct Tourmaline Round (4.12×4.12mm)
Difference: 8% (1.06 mm²)
0.25ct Beryl (Round, 4.28×4.28mm) has approx. 8% more face-up area than 0.25ct Tourmaline (Round, 4.12×4.12mm).


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