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36ct Tourmaline (Round, 21.58×21.58mm, Purple) vs 36ct Quartz (Round, 22.64×22.64mm, Brown)


Quick summary: When looked from above (face-up position), 36ct Quartz (22.64×22.64mm, round cut) appears 10% larger than 36ct Tourmaline (21.58×21.58mm, round cut). See below how they compare side-by-side on a ring and finger.

36ct Tourmaline (round cut)
vs
 36ct Quartz (round cut)
purple
 
brown
21.58×21.58 mm 22.64×22.64 mm
actual size
Actual size of 36ct Tourmaline (round cut, 21.58×21.58mm, Purple color)   Actual size of 36ct Quartz (round cut, 22.64×22.64mm, Brown color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Purple 36ct Tourmaline (round cut, 21.58×21.58mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Brown 36ct Quartz (round cut, 22.64×22.64mm) 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
 128% vs 134%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 36ct Tourmaline Round (21.58×21.58mm, Purple) and 36ct Quartz Round (22.64×22.64mm, Brown) 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 Quartz for a given carat weight, because it has higher specific gravity (3.06 vs. 2.65 - this means it's "heavier" compared to Quartz 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.


36 Ct Tourmaline (Round) 36 Ct Quartz (Round)
21.58×21.58 mm vs 22.64×22.64 mm
365.76 mm²   402.57 mm²
Face-up size outline for 36ct Quartz (22.64×22.64mm, round cut)
Face-up size outline for 36ct Tourmaline (21.58×21.58mm, round cut)
36ct Tourmaline Round (21.58×21.58mm)
36ct Quartz Round (22.64×22.64mm)
Difference: 10% (36.81 mm²)
36ct Quartz (Round, 22.64×22.64mm) has approx. 10% more face-up area than 36ct Tourmaline (Round, 21.58×21.58mm).


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