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0.21ct Spinel (Cushion, 3.5×2.8mm, Blue) vs 4ct Chrysoberyl (Cabochon, 11.15×7.43mm, Light Yellowish Green)


Quick summary: When looked from above (face-up position), 4ct Chrysoberyl (11.15×7.43mm, cabochon cut) appears 7.7 times larger than 0.21ct Spinel (3.5×2.8mm, cushion cut). See below how they compare side-by-side on a ring and finger.

0.21ct Spinel (cushion cut)
vs
 4ct Chrysoberyl (cabochon cut)
blue
 
light yellowish green
3.5×2.8 mm 11.15×7.43 mm
actual size
Actual size of 0.21ct Spinel (cushion cut, 3.5×2.8mm, Blue color)   Actual size of 4ct Chrysoberyl (cabochon cut, 11.15×7.43mm, Light Yellowish Green color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.21ct Spinel (cushion cut, 3.5×2.8mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Yellowish Green 4ct Chrysoberyl (cabochon cut, 11.15×7.43mm) 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
 17% vs 44%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.21ct Spinel Cushion (3.5×2.8mm, Blue) and 4ct Chrysoberyl Cabochon (11.15×7.43mm, Light Yellowish 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, Chrysoberyl will face-up smaller than Spinel for a given carat weight, because it has higher specific gravity (3.73 vs. 3.6 - this means it's "heavier" compared to Spinel 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.


0.21 Ct Spinel (Cushion) 4 Ct Chrysoberyl (Cabochon)
3.5×2.8 mm vs 11.15×7.43 mm
8.82 mm²   67.93 mm²
Face-up size outline for 4ct Chrysoberyl (11.15×7.43mm, cabochon cut)
Face-up size outline for 0.21ct Spinel (3.5×2.8mm, cushion cut)
0.21ct Spinel Cushion (3.5×2.8mm)
4ct Chrysoberyl Cabochon (11.15×7.43mm)
Difference: 670% (59.11 mm²)
4ct Chrysoberyl (Cabochon, 11.15×7.43mm) has approx. 670% more face-up area than 0.21ct Spinel (Cushion, 3.5×2.8mm). In other words, it's 7.7x larger.


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