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0.75ct Spinel (Marquise, 9.28×4.64mm, Light Blue) vs 0.6ct Sapphire (Cushion, 4.72×4.72mm, Dark Bluish Green)


Quick summary: When looked from above (face-up position), 0.75ct Spinel (9.28×4.64mm, marquise cut) appears 52% larger than 0.6ct Sapphire (4.72×4.72mm, cushion cut). See below how they compare side-by-side on a ring and finger.

0.75ct Spinel (marquise cut)
vs
 0.6ct Sapphire (cushion cut)
light blue
 
dark bluish green
9.28×4.64 mm 4.72×4.72 mm
actual size
Actual size of 0.75ct Spinel (marquise cut, 9.28×4.64mm, Light Blue color)   Actual size of 0.6ct Sapphire (cushion cut, 4.72×4.72mm, Dark Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Blue 0.75ct Spinel (marquise cut, 9.28×4.64mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Bluish Green 0.6ct Sapphire (cushion cut, 4.72×4.72mm) 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
 28% vs 28%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.75ct Spinel Marquise (9.28×4.64mm, Light Blue) and 0.6ct Sapphire Cushion (4.72×4.72mm, Dark Bluish 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, Sapphire will face-up smaller than Spinel for a given carat weight, because it has higher specific gravity (4 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.


0.75 Ct Spinel (Marquise) 0.6 Ct Sapphire (Cushion)
9.28×4.64 mm vs 4.72×4.72 mm
30.57 mm²   20.05 mm²
Face-up size outline for 0.75ct Spinel (9.28×4.64mm, marquise cut)
Face-up size outline for 0.6ct Sapphire (4.72×4.72mm, cushion cut)
0.75ct Spinel Marquise (9.28×4.64mm)
0.6ct Sapphire Cushion (4.72×4.72mm)
Difference: 52% (10.52 mm²)
0.75ct Spinel (Marquise, 9.28×4.64mm) has approx. 52% more face-up area than 0.6ct Sapphire (Cushion, 4.72×4.72mm).


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