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11ct Tourmaline (Princess, 12.77×12.77mm, Purple) vs 11ct Quartz (Princess, 13.4×13.4mm, Brown)


Quick summary: When looked from above (face-up position), 11ct Quartz (13.4×13.4mm, princess cut) appears 10% larger than 11ct Tourmaline (12.77×12.77mm, princess cut). See below how they compare side-by-side on a ring and finger.

11ct Tourmaline (princess cut)
vs
 11ct Quartz (princess cut)
purple
 
brown
12.77×12.77 mm 13.4×13.4 mm
actual size
Actual size of 11ct Tourmaline (princess cut, 12.77×12.77mm, Purple color)   Actual size of 11ct Quartz (princess cut, 13.4×13.4mm, Brown color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Purple 11ct Tourmaline (princess cut, 12.77×12.77mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Brown 11ct Quartz (princess cut, 13.4×13.4mm) 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
 76% vs 80%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 11ct Tourmaline Princess (12.77×12.77mm, Purple) and 11ct Quartz Princess (13.4×13.4mm, 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.


11 Ct Tourmaline (Princess) 11 Ct Quartz (Princess)
12.77×12.77 mm vs 13.4×13.4 mm
163.07 mm²   179.56 mm²
Face-up size outline for 11ct Quartz (13.4×13.4mm, princess cut)
Face-up size outline for 11ct Tourmaline (12.77×12.77mm, princess cut)
11ct Tourmaline Princess (12.77×12.77mm)
11ct Quartz Princess (13.4×13.4mm)
Difference: 10% (16.49 mm²)
11ct Quartz (Princess, 13.4×13.4mm) has approx. 10% more face-up area than 11ct Tourmaline (Princess, 12.77×12.77mm).


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