×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

0.34ct Benitoite (Emerald, 4.59×3.4mm, Blue) vs 0.9ct Diaspore (Cushion, 5.7×5.7mm, Red)


Quick summary: When looked from above (face-up position), 0.9ct Diaspore (5.7×5.7mm, cushion cut) appears 2 times larger than 0.34ct Benitoite (4.59×3.4mm, emerald cut). See below how they compare side-by-side on a ring and finger.

0.34ct Benitoite (emerald cut)
vs
0.9ct Diaspore (cushion cut)
blue
 
red
4.59×3.4 mm 5.7×5.7 mm
actual size
Actual size of 0.34ct Benitoite (emerald cut, 4.59×3.4mm, Blue color)   Actual size of 0.9ct Diaspore (cushion cut, 5.7×5.7mm, Red color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.34ct Benitoite (emerald cut, 4.59×3.4mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 0.9ct Diaspore (cushion cut, 5.7×5.7mm) 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
21% vs 34%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.34ct Benitoite Emerald (4.59×3.4mm, Blue) and 0.9ct Diaspore Cushion (5.7×5.7mm, 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, Benitoite will face-up smaller than Diaspore for a given carat weight, because it has higher specific gravity (3.65 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.


0.34 Ct Benitoite (Emerald) 0.9 Ct Diaspore (Cushion)
4.59×3.4 mm vs 5.7×5.7 mm
14.51 mm²   29.24 mm²
Face-up size outline for 0.9ct Diaspore (5.7×5.7mm, cushion cut)
Face-up size outline for 0.34ct Benitoite (4.59×3.4mm, emerald cut)
0.34ct Benitoite Emerald (4.59×3.4mm)
0.9ct Diaspore Cushion (5.7×5.7mm)
Difference: 102% (14.73 mm²)
0.9ct Diaspore (Cushion, 5.7×5.7mm) has approx. 102% more face-up area than 0.34ct Benitoite (Emerald, 4.59×3.4mm). In other words, it's 2.02x larger.


Popular comparisons: