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1ct Ruby (Baguette, 6.93×4.62mm, Red) vs 3ct Diamond (Baguette, 10.43×6.95mm, Red)


Quick summary: When looked from above (face-up position), 3ct Colored Diamond (10.43×6.95mm, baguette cut) appears 2.3 times larger than 1ct Ruby (6.93×4.62mm, baguette cut). See below how they compare side-by-side on a ring and finger.

1ct Ruby (baguette cut)
vs
 3ct Diamond (baguette cut)
red
 
red
6.93×4.62 mm 10.43×6.95 mm
actual size
Actual size of 1ct Ruby (baguette cut, 6.93×4.62mm, Red color)   Actual size of 3ct Diamond (baguette cut, 10.43×6.95mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Red 1ct Ruby (baguette cut, 6.93×4.62mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 3ct Diamond (baguette cut, 10.43×6.95mm) 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
 28% vs 42%
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Ring diameter: 16.9 mm
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Actual sizes of 1ct Ruby Baguette (6.93×4.62mm, Red) and 3ct Diamond Baguette (10.43×6.95mm, 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 Diamond for a given carat weight, because it has higher specific gravity (4 vs. 3.52 - this means it's "heavier" compared to Diamond 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.


1 Ct Ruby (Baguette) 3 Ct Colored Diamond (Baguette)
6.93×4.62 mm vs 10.43×6.95 mm
32.02 mm²   72.49 mm²
Face-up size outline for 3ct Diamond (10.43×6.95mm, baguette cut)
Face-up size outline for 1ct Ruby (6.93×4.62mm, baguette cut)
1ct Ruby Baguette (6.93×4.62mm)
3ct Colored Diamond Baguette (10.43×6.95mm)
Difference: 126% (40.47 mm²)
3ct Colored Diamond (Baguette, 10.43×6.95mm) has approx. 126% more face-up area than 1ct Ruby (Baguette, 6.93×4.62mm). In other words, it's 2.26x larger.


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