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22ct Rhodolite (Round, 16.98×16.98mm, Purple) vs 22ct Tourmaline (Round, 18.32×18.32mm, Purple)


Quick summary: When looked from above (face-up position), 22ct Tourmaline (18.32×18.32mm, round cut) appears 16% larger than 22ct Rhodolite (16.98×16.98mm, round cut). See below how they compare side-by-side on a ring and finger.

22ct Rhodolite (round cut)
vs
 22ct Tourmaline (round cut)
purple
 
purple
16.98×16.98 mm 18.32×18.32 mm
actual size
Actual size of 22ct Rhodolite (round cut, 16.98×16.98mm, Purple color)   Actual size of 22ct Tourmaline (round cut, 18.32×18.32mm, Purple color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Purple 22ct Rhodolite (round cut, 16.98×16.98mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Purple 22ct Tourmaline (round cut, 18.32×18.32mm) 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
 101% vs 109%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 22ct Rhodolite Round (16.98×16.98mm, Purple) and 22ct Tourmaline Round (18.32×18.32mm, 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.


22 Ct Rhodolite (Round) 22 Ct Tourmaline (Round)
16.98×16.98 mm vs 18.32×18.32 mm
226.45 mm²   263.6 mm²
Face-up size outline for 22ct Tourmaline (18.32×18.32mm, round cut)
Face-up size outline for 22ct Rhodolite (16.98×16.98mm, round cut)
22ct Rhodolite Round (16.98×16.98mm)
22ct Tourmaline Round (18.32×18.32mm)
Difference: 16% (37.15 mm²)
22ct Tourmaline (Round, 18.32×18.32mm) has approx. 16% more face-up area than 22ct Rhodolite (Round, 16.98×16.98mm).


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