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1.8ct Diaspore (Oval, 9.5×6.5mm, Light Purple) vs 2.3ct Diamond (Oval, 10×7.14mm, White)


Quick summary: When looked from above (face-up position), 2.3ct Diamond (10×7.14mm, oval cut) appears 16% larger than 1.8ct Diaspore (9.5×6.5mm, oval cut). See below how they compare side-by-side on a ring and finger.

1.8ct Diaspore (oval cut)
vs
 2.3ct Diamond (oval cut)
light purple
 
white
9.5×6.5 mm 10×7.14 mm
actual size
Actual size of 1.8ct Diaspore (oval cut, 9.5×6.5mm, Light Purple color)   Actual size of 2.3ct Diamond (oval cut, 10×7.14mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Purple 1.8ct Diaspore (oval cut, 9.5×6.5mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 2.3ct Diamond (oval cut, 10×7.14mm) 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
 39% vs 43%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1.8ct Diaspore Oval (9.5×6.5mm, Light Purple) and 2.3ct Diamond Oval (10×7.14mm, White) 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, Diamond will face-up smaller than Diaspore for a given carat weight, because it has higher specific gravity (3.52 vs. 3.4 - this means it's "heavier" compared to Diaspore 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.


1.8 Ct Diaspore (Oval) 2.3 Ct Diamond (Oval)
9.5×6.5 mm vs 10×7.14 mm
50.64 mm²   58.55 mm²
Face-up size outline for 2.3ct Diamond (10×7.14mm, oval cut)
Face-up size outline for 1.8ct Diaspore (9.5×6.5mm, oval cut)
1.8ct Diaspore Oval (9.5×6.5mm)
2.3ct Diamond Oval (10×7.14mm)
Difference: 16% (7.91 mm²)
2.3ct Diamond (Oval, 10×7.14mm) has approx. 16% more face-up area than 1.8ct Diaspore (Oval, 9.5×6.5mm).


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