×
carat vs. color  length*  width*
  ×

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

0.25ct Diamond (Cushion, 3.67×3.67mm, White) vs 8.59ct Spinel (Cushion, 11.86×11.86mm, Red)


Quick summary: When looked from above (face-up position), 8.59ct Spinel (11.86×11.86mm, cushion cut) appears 10.4 times larger than 0.25ct Diamond (3.67×3.67mm, cushion cut). See below how they compare side-by-side on a ring and finger.

0.25ct Diamond (cushion cut)
vs
 8.59ct Spinel (cushion cut)
white
 
red
3.67×3.67 mm 11.86×11.86 mm
actual size
Actual size of 0.25ct Diamond (cushion cut, 3.67×3.67mm, White color)   Actual size of 8.59ct Spinel (cushion cut, 11.86×11.86mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 0.25ct Diamond (cushion cut, 3.67×3.67mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 8.59ct Spinel (cushion cut, 11.86×11.86mm) 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
 22% vs 71%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.25ct Diamond Cushion (3.67×3.67mm, White) and 8.59ct Spinel Cushion (11.86×11.86mm, 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 slightly smaller than Diamond for a given carat weight, because it has higher specific gravity (3.6 vs. 3.52 - this means it's "slightly heavier" compared to Diamond 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.


0.25 Ct Diamond (Cushion) 8.59 Ct Spinel (Cushion)
3.67×3.67 mm vs 11.86×11.86 mm
12.12 mm²   126.59 mm²
Face-up size outline for 8.59ct Spinel (11.86×11.86mm, cushion cut)
Face-up size outline for 0.25ct Diamond (3.67×3.67mm, cushion cut)
0.25ct Diamond Cushion (3.67×3.67mm)
8.59ct Spinel Cushion (11.86×11.86mm)
Difference: 944% (114.47 mm²)
8.59ct Spinel (Cushion, 11.86×11.86mm) has approx. 944% more face-up area than 0.25ct Diamond (Cushion, 3.67×3.67mm). In other words, it's 10.44x larger.


Popular comparisons: