3ct Amethyst (Oval, 12.51×8.34mm, Violet) vs 1.2ct Diamond (Oval, 8.63×5.75mm, White)
Quick summary: When looked from above (face-up position), 3ct Amethyst (12.51×8.34mm, oval cut) appears 2.1 times larger than 1.2ct Diamond (8.63×5.75mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 3ct Amethyst (oval cut) |
vs
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1.2ct Diamond (oval cut) |
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violet |
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| 12.51×8.34 mm | 8.63×5.75 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
3ct Amethyst Oval (12.51×8.34mm, Violet)
and
1.2ct Diamond Oval (8.63×5.75mm, White)
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, Diamond will face-up smaller than Amethyst for a given
carat weight, because it has higher specific gravity
(3.52 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.
| 3 Ct Amethyst (Oval) | 1.2 Ct Diamond (Oval) | |
| 12.51×8.34 mm | vs | 8.63×5.75 mm |
| 85.55 mm² | 40.69 mm² |
| 3ct Amethyst Oval (12.51×8.34mm) | |
| 1.2ct Diamond Oval (8.63×5.75mm) | |
| Difference: 110% (44.86 mm²) |
3ct Amethyst (Oval, 12.51×8.34mm) has approx. 110% more face-up area than 1.2ct Diamond (Oval, 8.63×5.75mm). In other words, it's 2.1x larger.
Popular comparisons:
- 3ct Amethyst (Oval, Violet, 12.51 x 8.34) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 3ct Amethyst (Oval, Violet, 12.51 x 8.34) vs. 1ct Amethyst (Oval, Violet, 8.67 x 5.78)
- 3ct Amethyst (Oval, Violet, 12.51 x 8.34) vs. 3ct Diamond (Oval, White, 11.7 x 7.8)
- 3ct Amethyst (Oval, Violet, 12.51 x 8.34) vs. 3.5ct Amethyst (Oval, Violet, 13.17 x 8.78)
- 3ct Amethyst (Oval, Violet, 12.51 x 8.34) vs. 6.25ct Diamond (Round, White, 11.97 x 11.97)
- 3ct Amethyst (Oval, Violet, 12.51 x 8.34) vs. 7ct Amethyst (Oval, Violet, 16.59 x 11.06)
- 3ct Amethyst (Oval, Violet, 12.51 x 8.34) vs. 3ct Amethyst (Cushion, Violet, 9.25 x 9.25)
- 3ct Amethyst (Oval, Violet, 12.51 x 8.34) vs. 0.06ct Diamond (Round, White, 2.54 x 2.54)