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1ct Tourmaline (Trillion, 7.65×7.65mm, Violet) vs 1ct Diopside (Marquise, 10.52×5.26mm, Green)


Quick summary: When looked from above (face-up position), 1ct Diopside (10.52×5.26mm, marquise cut) appears 8% larger than 1ct Tourmaline (7.65×7.65mm, trillion cut). See below how they compare side-by-side on a ring and finger.

1ct Tourmaline (trillion cut)
vs
1ct Diopside (marquise cut)
violet
 
green
7.65×7.65 mm 10.52×5.26 mm
actual size
Actual size of 1ct Tourmaline (trillion cut, 7.65×7.65mm, Violet color)   Actual size of 1ct Diopside (marquise cut, 10.52×5.26mm, Green color)
 
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Left finger image
Ring on left finger
Violet 1ct Tourmaline (trillion cut, 7.65×7.65mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 1ct Diopside (marquise cut, 10.52×5.26mm) 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
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Ring diameter: 16.9 mm
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Actual sizes of 1ct Tourmaline Trillion (7.65×7.65mm, Violet) and 1ct Diopside Marquise (10.52×5.26mm, Green) 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, Diopside will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.3 vs. 3.1 - 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.


1 Ct Tourmaline (Trillion) 1 Ct Diopside (Marquise)
7.65×7.65 mm vs 10.52×5.26 mm
36.28 mm²   39.29 mm²
Face-up size outline for 1ct Diopside (10.52×5.26mm, marquise cut)
Face-up size outline for 1ct Tourmaline (7.65×7.65mm, trillion cut)
1ct Tourmaline Trillion (7.65×7.65mm)
1ct Diopside Marquise (10.52×5.26mm)
Difference: 8% (3.01 mm²)
1ct Diopside Marquise (10.52×5.26mm) has approx. 8% more face-up area than 1ct Tourmaline Trillion (7.65×7.65mm).


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