0.9ct Quartz (Marquise, 10.94×5.47mm, Orangey Red) vs 1ct Diamond (Oval, 8.12×5.41mm, White)
Quick summary: When looked from above (face-up position), 0.9ct Quartz (10.94×5.47mm, marquise cut) appears 18% larger than 1ct Diamond (8.12×5.41mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 0.9ct Quartz (marquise cut) |
vs
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1ct Diamond (oval cut) |
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orangey red |
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| 10.94×5.47 mm | 8.12×5.41 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
0.9ct Quartz Marquise (10.94×5.47mm, Orangey Red)
and
1ct Diamond Oval (8.12×5.41mm, 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 Quartz for a given
carat weight, because it has higher specific gravity
(3.52 vs. 2.65 - this means it's "heavier" compared to Quartz 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.
| 0.9 Ct Quartz (Marquise) | 1 Ct Diamond (Oval) | |
| 10.94×5.47 mm | vs | 8.12×5.41 mm |
| 42.49 mm² | 36.02 mm² |
| 0.9ct Quartz Marquise (10.94×5.47mm) | |
| 1ct Diamond Oval (8.12×5.41mm) | |
| Difference: 18% (6.47 mm²) |
0.9ct Quartz (Marquise, 10.94×5.47mm) has approx. 18% more face-up area than 1ct Diamond (Oval, 8.12×5.41mm).
Popular comparisons:
- 7ct Quartz (Marquise, Dark Yellowish Green, 27 x 10) vs. 2.96ct Quartz (Marquise, Dark Yellowish Green, 17 x 6.9)
- 1.74ct Quartz (Marquise, Dark Yellowish Green, 10.8 x 7.64) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1.4ct Quartz (Marquise, Orangey Red, 12.66 x 6.33) vs. 1.7ct Ruby (Marquise, Red, 11.78 x 5.89)
- 2.5ct Quartz (Marquise, Dark Brown, 14 x 7) vs. 1.01ct Citrine (Pear, Light Orange, 9 x 6)
- 3ct Quartz (Marquise, Orangey Red, 16.32 x 8.16) vs. 15ct Quartz (Marquise, Orangey Red, 27.92 x 13.96)
- 5ct Quartz (Marquise, Light Orange, 19.36 x 9.68) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 4.5ct Quartz (Marquise, Light Orange, 18.7 x 9.35) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 1.4ct Quartz (Marquise, Orangey Red, 12.66 x 6.33) vs. 0.17ct Diamond (Round, White, 3.6 x 3.6)