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0.85ct Tourmaline (Pear, 8.57×5.16mm, Violet) vs 2.74ct Spinel (Round, 8.66×8.66mm, Red)


Quick summary: When looked from above (face-up position), 2.74ct Spinel (8.66×8.66mm, round cut) appears 82% larger than 0.85ct Tourmaline (8.57×5.16mm, pear cut). See below how they compare side-by-side on a ring and finger.

0.85ct Tourmaline (pear cut)
vs
 2.74ct Spinel (round cut)
violet
 
red
8.57×5.16 mm 8.66×8.66 mm
actual size
Actual size of 0.85ct Tourmaline (pear cut, 8.57×5.16mm, Violet color)   Actual size of 2.74ct Spinel (round cut, 8.66×8.66mm, Red color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 0.85ct Tourmaline (pear cut, 8.57×5.16mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 2.74ct Spinel (round cut, 8.66×8.66mm) 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
 31% vs 52%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.85ct Tourmaline Pear (8.57×5.16mm, Violet) and 2.74ct Spinel Round (8.66×8.66mm, 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.


0.85 Ct Tourmaline (Pear) 2.74 Ct Spinel (Round)
8.57×5.16 mm vs 8.66×8.66 mm
32.28 mm²   58.9 mm²
Face-up size outline for 2.74ct Spinel (8.66×8.66mm, round cut)
Face-up size outline for 0.85ct Tourmaline (8.57×5.16mm, pear cut)
0.85ct Tourmaline Pear (8.57×5.16mm)
2.74ct Spinel Round (8.66×8.66mm)
Difference: 82% (26.62 mm²)
2.74ct Spinel (Round, 8.66×8.66mm) has approx. 82% more face-up area than 0.85ct Tourmaline (Pear, 8.57×5.16mm).


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