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24ct Rhodolite (Cabochon, 20.01×13.34mm, Purple) vs 24ct Tourmaline (Cabochon, 21.59×14.39mm, Purple)


Quick summary: When looked from above (face-up position), 24ct Tourmaline (21.59×14.39mm, cabochon cut) appears 16% larger than 24ct Rhodolite (20.01×13.34mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

24ct Rhodolite (cabochon cut)
vs
 24ct Tourmaline (cabochon cut)
purple
 
purple
20.01×13.34 mm 21.59×14.39 mm
actual size
Actual size of 24ct Rhodolite (cabochon cut, 20.01×13.34mm, Purple color)   Actual size of 24ct Tourmaline (cabochon cut, 21.59×14.39mm, Purple color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Purple 24ct Rhodolite (cabochon cut, 20.01×13.34mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 24ct Tourmaline (cabochon cut, 21.59×14.39mm) 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
 79% vs 86%
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Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 24ct Rhodolite Cabochon (20.01×13.34mm, Purple) and 24ct Tourmaline Cabochon (21.59×14.39mm, 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, Rhodolite will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.84 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.


24 Ct Rhodolite (Cabochon) 24 Ct Tourmaline (Cabochon)
20.01×13.34 mm vs 21.59×14.39 mm
218.89 mm²   254.76 mm²
Face-up size outline for 24ct Tourmaline (21.59×14.39mm, cabochon cut)
Face-up size outline for 24ct Rhodolite (20.01×13.34mm, cabochon cut)
24ct Rhodolite Cabochon (20.01×13.34mm)
24ct Tourmaline Cabochon (21.59×14.39mm)
Difference: 16% (35.87 mm²)
24ct Tourmaline (Cabochon, 21.59×14.39mm) has approx. 16% more face-up area than 24ct Rhodolite (Cabochon, 20.01×13.34mm).


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