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36ct Tourmaline (Marquise, 35.1×17.55mm, Purple) vs 36ct Quartz (Marquise, 36.82×18.41mm, Brown)


Quick summary: When looked from above (face-up position), 36ct Quartz (36.82×18.41mm, marquise cut) appears 10% larger than 36ct Tourmaline (35.1×17.55mm, marquise cut). See below how they compare side-by-side on a ring and finger.

36ct Tourmaline (marquise cut)
vs
 36ct Quartz (marquise cut)
purple
 
brown
35.1×17.55 mm 36.82×18.41 mm
actual size
Actual size of 36ct Tourmaline (marquise cut, 35.1×17.55mm, Purple color)   Actual size of 36ct Quartz (marquise cut, 36.82×18.41mm, 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 (marquise cut, 35.1×17.55mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Brown 36ct Quartz (marquise cut, 36.82×18.41mm) 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
 104% vs 109%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 36ct Tourmaline Marquise (35.1×17.55mm, Purple) and 36ct Quartz Marquise (36.82×18.41mm, 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 (Marquise) 36 Ct Quartz (Marquise)
35.1×17.55 mm vs 36.82×18.41 mm
437.36 mm²   481.28 mm²
Face-up size outline for 36ct Quartz (36.82×18.41mm, marquise cut)
Face-up size outline for 36ct Tourmaline (35.1×17.55mm, marquise cut)
36ct Tourmaline Marquise (35.1×17.55mm)
36ct Quartz Marquise (36.82×18.41mm)
Difference: 10% (43.92 mm²)
36ct Quartz (Marquise, 36.82×18.41mm) has approx. 10% more face-up area than 36ct Tourmaline (Marquise, 35.1×17.55mm).


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