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10ct Ruby (Round, 12.88×12.88mm, Red) vs 1ct Ruby (Princess, 5.37×5.37mm, Red)


Quick summary: When looked from above (face-up position), 10ct Ruby (12.88×12.88mm, round cut) appears 4.5 times larger than 1ct Ruby (5.37×5.37mm, princess cut). See below how they compare side-by-side on a ring and finger.

10ct Ruby (round cut)
vs
 1ct Ruby (princess cut)
red
 
red
12.88×12.88 mm 5.37×5.37 mm
actual size
Actual size of 10ct Ruby (round cut, 12.88×12.88mm, Red color)   Actual size of 1ct Ruby (princess cut, 5.37×5.37mm, Red color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 10ct Ruby (round cut, 12.88×12.88mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 1ct Ruby (princess cut, 5.37×5.37mm) 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
 77% vs 32%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 10ct Ruby Round (12.88×12.88mm, Red) and 1ct Ruby Princess (5.37×5.37mm, 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

The face-up size depends on the shape of the gem, its weight and 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.


10 Ct Ruby (Round) 1 Ct Ruby (Princess)
12.88×12.88 mm vs 5.37×5.37 mm
130.29 mm²   28.84 mm²
Face-up size outline for 10ct Ruby (12.88×12.88mm, round cut)
Face-up size outline for 1ct Ruby (5.37×5.37mm, princess cut)
10ct Ruby Round (12.88×12.88mm)
1ct Ruby Princess (5.37×5.37mm)
Difference: 352% (101.45 mm²)
10ct Ruby (Round, 12.88×12.88mm) has approx. 352% more face-up area than 1ct Ruby (Princess, 5.37×5.37mm). In other words, it's 4.52x larger.


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