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40ct Almandine (Round, 20.36×20.36mm, Dark Red) vs 40ct Ruby (Round, 20.45×20.45mm, Red)


Quick summary: When looked from above (face-up position), 40ct Ruby (20.45×20.45mm, round cut) appears 0.9% larger than 40ct Almandine (20.36×20.36mm, round cut). See below how they compare side-by-side on a ring and finger.

40ct Almandine (round cut)
vs
 40ct Ruby (round cut)
dark red
 
red
20.36×20.36 mm 20.45×20.45 mm
actual size
Actual size of 40ct Almandine (round cut, 20.36×20.36mm, Dark Red color)   Actual size of 40ct Ruby (round cut, 20.45×20.45mm, 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 40ct Almandine (round cut, 20.36×20.36mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 40ct Ruby (round cut, 20.45×20.45mm) 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
 121% vs 122%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 40ct Almandine Round (20.36×20.36mm, Dark Red) and 40ct Ruby Round (20.45×20.45mm, 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.


40 Ct Almandine (Round) 40 Ct Ruby (Round)
20.36×20.36 mm vs 20.45×20.45 mm
325.57 mm²   328.46 mm²
Face-up size outline for 40ct Ruby (20.45×20.45mm, round cut)
Face-up size outline for 40ct Almandine (20.36×20.36mm, round cut)
40ct Almandine Round (20.36×20.36mm)
40ct Ruby Round (20.45×20.45mm)
Difference: 0.9% (2.89 mm²)
40ct Ruby (Round, 20.45×20.45mm) has approx. 0.9% more face-up area than 40ct Almandine (Round, 20.36×20.36mm).


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