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4ct Ruby (Trillion, 11.6×11.6mm, Red) vs 4ct Pyrope (Trillion, 11.82×11.82mm, Red)


Quick summary: When looked from above (face-up position), 4ct Pyrope (11.82×11.82mm, trillion cut) appears 4% larger than 4ct Ruby (11.6×11.6mm, trillion cut). See below how they compare side-by-side on a ring and finger.

4ct Ruby (trillion cut)
vs
 4ct Pyrope (trillion cut)
red
 
red
11.6×11.6 mm 11.82×11.82 mm
actual size
Actual size of 4ct Ruby (trillion cut, 11.6×11.6mm, Red color)   Actual size of 4ct Pyrope (trillion cut, 11.82×11.82mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 4ct Ruby (trillion cut, 11.6×11.6mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 4ct Pyrope (trillion cut, 11.82×11.82mm) 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
 69% vs 70%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 4ct Ruby Trillion (11.6×11.6mm, Red) and 4ct Pyrope Trillion (11.82×11.82mm, 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, Ruby will face-up smaller than Pyrope for a given carat weight, because it has higher specific gravity (4 vs. 3.78 - this means it's "heavier" compared to Pyrope 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.


4 Ct Ruby (Trillion) 4 Ct Pyrope (Trillion)
11.6×11.6 mm vs 11.82×11.82 mm
83.43 mm²   86.62 mm²
Face-up size outline for 4ct Pyrope (11.82×11.82mm, trillion cut)
Face-up size outline for 4ct Ruby (11.6×11.6mm, trillion cut)
4ct Ruby Trillion (11.6×11.6mm)
4ct Pyrope Trillion (11.82×11.82mm)
Difference: 4% (3.19 mm²)
4ct Pyrope (Trillion, 11.82×11.82mm) has approx. 4% more face-up area than 4ct Ruby (Trillion, 11.6×11.6mm).


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