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1ct Ruby (Oval, 8×6mm, Red) vs 1ct Spinel (Oval, 8×6mm, Red)


Quick summary: Compared gemstones have equal face-up area.

1ct Ruby (oval cut)
vs
 1ct Spinel (oval cut)
red
 
red
8×6 mm 8×6 mm
actual size
Actual size of 1ct Ruby (oval cut, 8×6mm, Red color)   Actual size of 1ct Spinel (oval cut, 8×6mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 1ct Ruby (oval cut, 8×6mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 1ct Spinel (oval cut, 8×6mm) 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
 36% vs 36%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1ct Ruby Oval (8×6mm, Red) and 1ct Spinel Oval (8×6mm, 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, Ruby 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.


1 Ct Ruby (Oval) 1 Ct Spinel (Oval)
8×6 mm vs 8×6 mm
39.36 mm²   39.36 mm²
Face-up size outline for true size of 8×6mm
1ct Ruby Oval (8×6mm)
1ct Spinel Oval (8×6mm)
Difference: 0% (0 mm²)
1ct Ruby (Oval, 8×6mm) and 1ct Spinel (Oval, 8×6mm) have the same face-up area.


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