1ct Amethyst (Cushion, 6.41×6.41mm, Purple) vs 1ct Quartz (Round, 6.86×6.86mm, Yellowish Green)
Quick summary: When looked from above (face-up position), 1ct Amethyst (6.41×6.41mm, cushion cut) appears 0.1% larger than 1ct Quartz (6.86×6.86mm, round cut). See below how they compare side-by-side on a ring and finger.
| 1ct Amethyst (cushion cut) |
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1ct Quartz (round cut) |
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purple |
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| 6.41×6.41 mm | 6.86×6.86 mm | |
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Actual sizes of
1ct Amethyst Cushion (6.41×6.41mm, Purple)
and
1ct Quartz Round (6.86×6.86mm, Yellowish Green)
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
Amethyst and Quartz have the same specific gravity so their face-up size
depends on the weight, shape and 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.
| 1 Ct Amethyst (Cushion) | 1 Ct Quartz (Round) | |
| 6.41×6.41 mm | vs | 6.86×6.86 mm |
| 36.98 mm² | 36.96 mm² |
| 1ct Amethyst Cushion (6.41×6.41mm) | |
| 1ct Quartz Round (6.86×6.86mm) | |
| Difference: 0.1% (0.02 mm²) |
1ct Amethyst Cushion (6.41×6.41mm) has approx. 0.1% more face-up area than 1ct Quartz Round (6.86×6.86mm).
Popular comparisons:
- 1ct Amethyst (Cushion, Purple, 6.41 x 6.41) vs. 1ct Quartz (Round, Violet, 6.86 x 6.86)
- 2ct Amethyst (Cushion, Violet, 8 x 8) vs. 2ct Diamond (Cushion, White, 7.34 x 7.34)
- 2.11ct Amethyst (Cushion, Violet, 8.23 x 8.23) vs. 2.11ct Diamond (Cushion, White, 7.47 x 7.47)
- 1.35ct Amethyst (Cushion, Violet, 7.09 x 7.09) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 3ct Amethyst (Cushion, Violet, 9.25 x 9.25) vs. 3ct Diamond (Cushion, White, 8.4 x 8.4)
- 35ct Amethyst (Cushion, Violet, 20.98 x 20.98) vs. 1ct Ruby (Round, Red, 5.98 x 5.98)
- 26ct Amethyst (Cushion, Violet, 19 x 19) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Amethyst (Cushion, Violet, 6.41 x 6.41) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
Enter your screen size (diagonal)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.