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28ct Almandine (Round, 18.08×18.08mm, Dark Red) vs 28ct Ruby (Round, 18.15×18.15mm, Red)


Quick summary: When looked from above (face-up position), 28ct Ruby (18.15×18.15mm, round cut) appears 0.8% larger than 28ct Almandine (18.08×18.08mm, round cut). See below how they compare side-by-side on a ring and finger.

28ct Almandine (round cut)
vs
 28ct Ruby (round cut)
dark red
 
red
18.08×18.08 mm 18.15×18.15 mm
actual size
Actual size of 28ct Almandine (round cut, 18.08×18.08mm, Dark Red color)   Actual size of 28ct Ruby (round cut, 18.15×18.15mm, 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 28ct Almandine (round cut, 18.08×18.08mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 28ct Ruby (round cut, 18.15×18.15mm) 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
 107% vs 108%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 28ct Almandine Round (18.08×18.08mm, Dark Red) and 28ct Ruby Round (18.15×18.15mm, 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.


28 Ct Almandine (Round) 28 Ct Ruby (Round)
18.08×18.08 mm vs 18.15×18.15 mm
256.74 mm²   258.73 mm²
Face-up size outline for 28ct Ruby (18.15×18.15mm, round cut)
Face-up size outline for 28ct Almandine (18.08×18.08mm, round cut)
28ct Almandine Round (18.08×18.08mm)
28ct Ruby Round (18.15×18.15mm)
Difference: 0.8% (1.99 mm²)
28ct Ruby (Round, 18.15×18.15mm) has approx. 0.8% more face-up area than 28ct Almandine (Round, 18.08×18.08mm).


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