1ct Amethyst (Princess, 6.17×6.17mm, Violet) vs 1ct Ruby (Princess, 5.37×5.37mm, Red)
Quick summary: When looked from above (face-up position), 1ct Amethyst (6.17×6.17mm, princess cut) appears 32% larger than 1ct Ruby (5.37×5.37mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 1ct Amethyst (princess cut) |
vs
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1ct Ruby (princess cut) |
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violet |
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| 6.17×6.17 mm | 5.37×5.37 mm | |
| actual size | ||
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Actual size is set for screen
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Ring:
Skin tone:
Ring width: 3.0 mm
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64 mm |
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Actual sizes of
1ct Amethyst Princess (6.17×6.17mm, Violet)
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
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.
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 Amethyst (Princess) | 1 Ct Ruby (Princess) | |
| 6.17×6.17 mm | vs | 5.37×5.37 mm |
| 38.07 mm² | 28.84 mm² |
| 1ct Amethyst Princess (6.17×6.17mm) | |
| 1ct Ruby Princess (5.37×5.37mm) | |
| Difference: 32% (9.23 mm²) |
1ct Amethyst (Princess, 6.17×6.17mm) has approx. 32% more face-up area than 1ct Ruby (Princess, 5.37×5.37mm).
Popular comparisons:
- 1ct Amethyst (Princess, Violet, 6.17 x 6.17) vs. 1ct Diamond (Princess, White, 5.51 x 5.51)
- 1ct Amethyst (Princess, Violet, 6.17 x 6.17) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Amethyst (Princess, Violet, 6.17 x 6.17) vs. 1ct Tanzanite (Princess, Blue, 5.73 x 5.73)
- 1ct Amethyst (Princess, Violet, 6.17 x 6.17) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2ct Amethyst (Princess, Violet, 7.77 x 7.77) vs. 2ct Amethyst (Oval, Violet, 10.94 x 7.29)
- 1ct Amethyst (Princess, Dark Purple, 6.17 x 6.17) vs. 1ct Tanzanite (Princess, Dark Blue, 5.73 x 5.73)
- 3.72ct Amethyst (Princess, Violet, 9.55 x 9.55) vs. 3.72ct Diamond (Princess, White, 8.54 x 8.54)
- 1ct Amethyst (Princess, Dark Violet, 6.17 x 6.17) vs. 1ct Tanzanite (Princess, Dark Blue, 5.73 x 5.73)