6ct Amethyst (Oval, 15.77×10.51mm, Violet) vs 7.5ct Ruby (Oval, 14.81×9.87mm, Red)
Quick summary: When looked from above (face-up position), 6ct Amethyst (15.77×10.51mm, oval cut) appears 13% larger than 7.5ct Ruby (14.81×9.87mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 6ct Amethyst (oval cut) |
vs
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7.5ct Ruby (oval cut) |
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violet |
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| 15.77×10.51 mm | 14.81×9.87 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
6ct Amethyst Oval (15.77×10.51mm, Violet)
and
7.5ct Ruby Oval (14.81×9.87mm, 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.
| 6 Ct Amethyst (Oval) | 7.5 Ct Ruby (Oval) | |
| 15.77×10.51 mm | vs | 14.81×9.87 mm |
| 135.91 mm² | 119.86 mm² |
| 6ct Amethyst Oval (15.77×10.51mm) | |
| 7.5ct Ruby Oval (14.81×9.87mm) | |
| Difference: 13% (16.05 mm²) |
6ct Amethyst (Oval, 15.77×10.51mm) has approx. 13% more face-up area than 7.5ct Ruby (Oval, 14.81×9.87mm).
Popular comparisons:
- 6ct Amethyst (Oval, Violet, 15.77 x 10.51) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 6ct Amethyst (Oval, Violet, 15.77 x 10.51) vs. 6ct Emerald (Oval, Green, 15.68 x 10.45)
- 6ct Amethyst (Oval, Violet, 15.77 x 10.51) vs. 7ct Amethyst (Emerald, Violet, 14.01 x 10.38)
- 6ct Amethyst (Oval, Violet, 15.77 x 10.51) vs. 8ct Amethyst (Emerald, Violet, 14.65 x 10.85)
- 6ct Amethyst (Oval, Violet, 15.77 x 10.51) vs. 6ct Spinel (Oval, Red, 14.24 x 9.49)
- 6ct Amethyst (Oval, Violet, 15.77 x 10.51) vs. 6ct Sapphire (Oval, Blue, 13.74 x 9.16)
- 6ct Amethyst (Oval, Violet, 15.77 x 10.51) vs. 7.5ct Sapphire (Oval, Blue, 14.81 x 9.87)
- 6ct Amethyst (Oval, Violet, 15.77 x 10.51) vs. 1ct Diamond (Round, White, 6.5 x 6.5)