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13ct Almandine (Cushion, 12.96×12.96mm, Dark Red) vs 13ct Ruby (Cushion, 13.02×13.02mm, Red)


Quick summary: When looked from above (face-up position), 13ct Ruby (13.02×13.02mm, cushion cut) appears 0.9% larger than 13ct Almandine (12.96×12.96mm, cushion cut). See below how they compare side-by-side on a ring and finger.

13ct Almandine (cushion cut)
vs
 13ct Ruby (cushion cut)
dark red
 
red
12.96×12.96 mm 13.02×13.02 mm
actual size
Actual size of 13ct Almandine (cushion cut, 12.96×12.96mm, Dark Red color)   Actual size of 13ct Ruby (cushion cut, 13.02×13.02mm, 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 13ct Almandine (cushion cut, 12.96×12.96mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 13ct Ruby (cushion cut, 13.02×13.02mm) 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 78%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 13ct Almandine Cushion (12.96×12.96mm, Dark Red) and 13ct Ruby Cushion (13.02×13.02mm, 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.


13 Ct Almandine (Cushion) 13 Ct Ruby (Cushion)
12.96×12.96 mm vs 13.02×13.02 mm
151.17 mm²   152.57 mm²
Face-up size outline for 13ct Ruby (13.02×13.02mm, cushion cut)
Face-up size outline for 13ct Almandine (12.96×12.96mm, cushion cut)
13ct Almandine Cushion (12.96×12.96mm)
13ct Ruby Cushion (13.02×13.02mm)
Difference: 0.9% (1.4 mm²)
13ct Ruby (Cushion, 13.02×13.02mm) has approx. 0.9% more face-up area than 13ct Almandine (Cushion, 12.96×12.96mm).


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