1ct Ruby (Pear, 8.3×5mm, Red) vs 1ct Amethyst (Oval, 8.67×5.78mm, Violet)
Quick summary: When looked from above (face-up position), 1ct Amethyst (8.67×5.78mm, oval cut) appears 36% larger than 1ct Ruby (8.3×5mm, pear cut). See below how they compare side-by-side on a ring and finger.
| 1ct Ruby (pear cut) |
vs
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1ct Amethyst (oval cut) |
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red |
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| 8.3×5 mm | 8.67×5.78 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 Ruby Pear (8.3×5mm, Red)
and
1ct Amethyst Oval (8.67×5.78mm, Violet)
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 Ruby (Pear) | 1 Ct Amethyst (Oval) | |
| 8.3×5 mm | vs | 8.67×5.78 mm |
| 30.3 mm² | 41.09 mm² |
| 1ct Ruby Pear (8.3×5mm) | |
| 1ct Amethyst Oval (8.67×5.78mm) | |
| Difference: 36% (10.79 mm²) |
1ct Amethyst (Oval, 8.67×5.78mm) has approx. 36% more face-up area than 1ct Ruby (Pear, 8.3×5mm).
Popular comparisons:
- 1ct Ruby (Pear, Red, 8.3 x 5) vs. 1ct Diamond (Pear, White, 9.05 x 5.45)
- 1ct Ruby (Pear, Red, 8.3 x 5) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Ruby (Pear, Red, 8.3 x 5) vs. 1ct Sapphire (Emerald, Violet, 6.39 x 4.73)
- 1ct Ruby (Pear, Red, 8.3 x 5) vs. 3.25ct Ruby (Emerald, Red, 9.46 x 7.01)
- 1ct Ruby (Pear, Red, 8.3 x 5) vs. 1ct Sapphire (Emerald, Blue, 6.39 x 4.73)
- 1ct Ruby (Pear, Red, 8.3 x 5) vs. 1ct Diamond (Emerald, White, 6.68 x 4.95)
- 1ct Ruby (Pear, Red, 8.3 x 5) vs. 1ct Ruby (Emerald, Red, 6.39 x 4.73)
- 1ct Ruby (Pear, Red, 8.3 x 5) vs. 1.1ct Emerald (Emerald, Green, 7.52 x 5.57)