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1ct Diaspore (Marquise, 10.42×5.21mm, Dark Red) vs 1ct Diopside (Marquise, 10.52×5.26mm, Black)


Quick summary: When looked from above (face-up position), 1ct Diopside (10.52×5.26mm, marquise cut) appears 2% larger than 1ct Diaspore (10.42×5.21mm, marquise cut). See below how they compare side-by-side on a ring and finger.

1ct Diaspore (marquise cut)
vs
 1ct Diopside (marquise cut)
dark red
 
black
10.42×5.21 mm 10.52×5.26 mm
actual size
Actual size of 1ct Diaspore (marquise cut, 10.42×5.21mm, Dark Red color)   Actual size of 1ct Diopside (marquise cut, 10.52×5.26mm, Black color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Dark Red 1ct Diaspore (marquise cut, 10.42×5.21mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Black 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
Finger coverage
 31% vs 32%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1ct Diaspore Marquise (10.42×5.21mm, Dark Red) and 1ct Diopside Marquise (10.52×5.26mm, Black) 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, Diaspore will face-up smaller than Diopside for a given carat weight, because it has higher specific gravity (3.4 vs. 3.3 - this means it's "heavier" compared to Diopside 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 Diaspore (Marquise) 1 Ct Diopside (Marquise)
10.42×5.21 mm vs 10.52×5.26 mm
38.54 mm²   39.29 mm²
Face-up size outline for 1ct Diopside (10.52×5.26mm, marquise cut)
Face-up size outline for 1ct Diaspore (10.42×5.21mm, marquise cut)
1ct Diaspore Marquise (10.42×5.21mm)
1ct Diopside Marquise (10.52×5.26mm)
Difference: 2% (0.75 mm²)
1ct Diopside (Marquise, 10.52×5.26mm) has approx. 2% more face-up area than 1ct Diaspore (Marquise, 10.42×5.21mm).


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