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4.98ct Tourmaline (Cabochon, 12.72×8.48mm, Violet) vs 4.13ct Ruby (Cabochon, 10.98×7.32mm, Red)


Quick summary: When looked from above (face-up position), 4.98ct Tourmaline (12.72×8.48mm, cabochon cut) appears 34% larger than 4.13ct Ruby (10.98×7.32mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

4.98ct Tourmaline (cabochon cut)
vs
 4.13ct Ruby (cabochon cut)
violet
 
red
12.72×8.48 mm 10.98×7.32 mm
actual size
Actual size of 4.98ct Tourmaline (cabochon cut, 12.72×8.48mm, Violet color)   Actual size of 4.13ct Ruby (cabochon cut, 10.98×7.32mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 4.98ct Tourmaline (cabochon cut, 12.72×8.48mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 4.13ct Ruby (cabochon cut, 10.98×7.32mm) 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
 51% vs 44%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 4.98ct Tourmaline Cabochon (12.72×8.48mm, Violet) and 4.13ct Ruby Cabochon (10.98×7.32mm, 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 Tourmaline for a given carat weight, because it has higher specific gravity (4 vs. 3.06 - this means it's "heavier" compared to Tourmaline 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.


4.98 Ct Tourmaline (Cabochon) 4.13 Ct Ruby (Cabochon)
12.72×8.48 mm vs 10.98×7.32 mm
88.45 mm²   65.91 mm²
Face-up size outline for 4.98ct Tourmaline (12.72×8.48mm, cabochon cut)
Face-up size outline for 4.13ct Ruby (10.98×7.32mm, cabochon cut)
4.98ct Tourmaline Cabochon (12.72×8.48mm)
4.13ct Ruby Cabochon (10.98×7.32mm)
Difference: 34% (22.54 mm²)
4.98ct Tourmaline (Cabochon, 12.72×8.48mm) has approx. 34% more face-up area than 4.13ct Ruby (Cabochon, 10.98×7.32mm).


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