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3.33ct Tourmaline (Pear, 13.5×8.13mm, Violet) vs 2ct Spinel (Marquise, 12.88×6.44mm, Red)


Quick summary: When looked from above (face-up position), 3.33ct Tourmaline (13.5×8.13mm, pear cut) appears 36% larger than 2ct Spinel (12.88×6.44mm, marquise cut). See below how they compare side-by-side on a ring and finger.

3.33ct Tourmaline (pear cut)
vs
 2ct Spinel (marquise cut)
violet
 
red
13.5×8.13 mm 12.88×6.44 mm
actual size
Actual size of 3.33ct Tourmaline (pear cut, 13.5×8.13mm, Violet color)   Actual size of 2ct Spinel (marquise cut, 12.88×6.44mm, Red color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 3.33ct Tourmaline (pear cut, 13.5×8.13mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 2ct Spinel (marquise cut, 12.88×6.44mm) 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
 49% vs 39%
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Ring diameter: 16.9 mm
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Actual sizes of 3.33ct Tourmaline Pear (13.5×8.13mm, Violet) and 2ct Spinel Marquise (12.88×6.44mm, Red) 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, Spinel will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.6 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.


3.33 Ct Tourmaline (Pear) 2 Ct Spinel (Marquise)
13.5×8.13 mm vs 12.88×6.44 mm
80.12 mm²   58.89 mm²
Face-up size outline for 3.33ct Tourmaline (13.5×8.13mm, pear cut)
Face-up size outline for 2ct Spinel (12.88×6.44mm, marquise cut)
3.33ct Tourmaline Pear (13.5×8.13mm)
2ct Spinel Marquise (12.88×6.44mm)
Difference: 36% (21.23 mm²)
3.33ct Tourmaline (Pear, 13.5×8.13mm) has approx. 36% more face-up area than 2ct Spinel (Marquise, 12.88×6.44mm).


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