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15ct Almandine (Princess, 12.9×12.9mm, Dark Red) vs 15ct Ruby (Princess, 12.95×12.95mm, Red)


Quick summary: When looked from above (face-up position), 15ct Ruby (12.95×12.95mm, princess cut) appears 0.8% larger than 15ct Almandine (12.9×12.9mm, princess cut). See below how they compare side-by-side on a ring and finger.

15ct Almandine (princess cut)
vs
 15ct Ruby (princess cut)
dark red
 
red
12.9×12.9 mm 12.95×12.95 mm
actual size
Actual size of 15ct Almandine (princess cut, 12.9×12.9mm, Dark Red color)   Actual size of 15ct Ruby (princess cut, 12.95×12.95mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Dark Red 15ct Almandine (princess cut, 12.9×12.9mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 15ct Ruby (princess cut, 12.95×12.95mm) 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
 77% vs 77%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 15ct Almandine Princess (12.9×12.9mm, Dark Red) and 15ct Ruby Princess (12.95×12.95mm, 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, Almandine will face-up slightly smaller than Ruby for a given carat weight, because it has higher specific gravity (4.05 vs. 4 - this means it's "slightly heavier" compared to Ruby 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.


15 Ct Almandine (Princess) 15 Ct Ruby (Princess)
12.9×12.9 mm vs 12.95×12.95 mm
166.41 mm²   167.7 mm²
Face-up size outline for 15ct Ruby (12.95×12.95mm, princess cut)
Face-up size outline for 15ct Almandine (12.9×12.9mm, princess cut)
15ct Almandine Princess (12.9×12.9mm)
15ct Ruby Princess (12.95×12.95mm)
Difference: 0.8% (1.29 mm²)
15ct Ruby (Princess, 12.95×12.95mm) has approx. 0.8% more face-up area than 15ct Almandine (Princess, 12.9×12.9mm).


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