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35ct Amethyst (Cushion, 20.98×20.98mm, Violet) vs 1ct Ruby (Round, 5.98×5.98mm, Red)


Quick summary: When looked from above (face-up position), 35ct Amethyst (20.98×20.98mm, cushion cut) appears 14.1 times larger than 1ct Ruby (5.98×5.98mm, round cut). See below how they compare side-by-side on a ring and finger.

35ct Amethyst (cushion cut)
vs
 1ct Ruby (round cut)
violet
 
red
20.98×20.98 mm 5.98×5.98 mm
actual size
Actual size of 35ct Amethyst (cushion cut, 20.98×20.98mm, Violet color)   Actual size of 1ct Ruby (round cut, 5.98×5.98mm, Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 35ct Amethyst (cushion cut, 20.98×20.98mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Red 1ct Ruby (round cut, 5.98×5.98mm) 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
 125% vs 36%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 35ct Amethyst Cushion (20.98×20.98mm, Violet) and 1ct Ruby Round (5.98×5.98mm, 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 Amethyst for a given carat weight, because it has higher specific gravity (4 vs. 2.65 - this means it's "heavier" compared to Amethyst 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.


35 Ct Amethyst (Cushion) 1 Ct Ruby (Round)
20.98×20.98 mm vs 5.98×5.98 mm
396.14 mm²   28.09 mm²
Face-up size outline for 35ct Amethyst (20.98×20.98mm, cushion cut)
Face-up size outline for 1ct Ruby (5.98×5.98mm, round cut)
35ct Amethyst Cushion (20.98×20.98mm)
1ct Ruby Round (5.98×5.98mm)
Difference: 1310% (368.05 mm²)
35ct Amethyst (Cushion, 20.98×20.98mm) has approx. 1310% more face-up area than 1ct Ruby (Round, 5.98×5.98mm). In other words, it's 14.1x larger.


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