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17ct Ruby (Trillion, 18.8×18.8mm, Red) vs 17ct Andesine (Trillion, 21.51×21.51mm, Orange)


Quick summary: When looked from above (face-up position), 17ct Andesine (21.51×21.51mm, trillion cut) appears 31% larger than 17ct Ruby (18.8×18.8mm, trillion cut). See below how they compare side-by-side on a ring and finger.

17ct Ruby (trillion cut)
vs
 17ct Andesine (trillion cut)
red
 
orange
18.8×18.8 mm 21.51×21.51 mm
actual size
Actual size of 17ct Ruby (trillion cut, 18.8×18.8mm, Red color)   Actual size of 17ct Andesine (trillion cut, 21.51×21.51mm, Orange color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 17ct Ruby (trillion cut, 18.8×18.8mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 17ct Andesine (trillion cut, 21.51×21.51mm) 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
 112% vs 128%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 17ct Ruby Trillion (18.8×18.8mm, Red) and 17ct Andesine Trillion (21.51×21.51mm, Orange) 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 Andesine for a given carat weight, because it has higher specific gravity (4 vs. 2.67 - this means it's "heavier" compared to Andesine 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.


17 Ct Ruby (Trillion) 17 Ct Andesine (Trillion)
18.8×18.8 mm vs 21.51×21.51 mm
219.13 mm²   286.86 mm²
Face-up size outline for 17ct Andesine (21.51×21.51mm, trillion cut)
Face-up size outline for 17ct Ruby (18.8×18.8mm, trillion cut)
17ct Ruby Trillion (18.8×18.8mm)
17ct Andesine Trillion (21.51×21.51mm)
Difference: 31% (67.73 mm²)
17ct Andesine (Trillion, 21.51×21.51mm) has approx. 31% more face-up area than 17ct Ruby (Trillion, 18.8×18.8mm).


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