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1ct Ruby (Oval, 7×5mm, Red) vs 1ct Diamond (Oval, 7×5mm, White)


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

1ct Ruby (oval cut)
vs
 1ct Diamond (oval cut)
red
 
white
7×5 mm 7×5 mm
actual size
Actual size of 1ct Ruby (oval cut, 7×5mm, Red color)   Actual size of 1ct Diamond (oval cut, 7×5mm, White 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, 7×5mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 1ct Diamond (oval cut, 7×5mm) 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
 30% vs 30%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 1ct Ruby Oval (7×5mm, Red) and 1ct Diamond Oval (7×5mm, White) 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 Diamond for a given carat weight, because it has higher specific gravity (4 vs. 3.52 - this means it's "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.


1 Ct Ruby (Oval) 1 Ct Diamond (Oval)
7×5 mm vs 7×5 mm
28.7 mm²   28.7 mm²
Face-up size outline for true size of 7×5mm
1ct Ruby Oval (7×5mm)
1ct Diamond Oval (7×5mm)
Difference: 0% (0 mm²)
1ct Ruby (Oval, 7×5mm) and 1ct Diamond (Oval, 7×5mm) have the same face-up area.


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