30ct Diamond (Oval, 25.22×16.81mm, White) vs 30ct Quartz (Oval, 26.96×17.97mm, Orangey Red)
Quick summary: When looked from above (face-up position), 30ct Quartz (26.96×17.97mm, oval cut) appears 14% larger than 30ct Diamond (25.22×16.81mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 30ct Diamond (oval cut) |
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30ct Quartz (oval cut) |
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white |
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| 25.22×16.81 mm | 26.96×17.97 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
30ct Diamond Oval (25.22×16.81mm, White)
and
30ct Quartz Oval (26.96×17.97mm, Orangey 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, 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.
| 30 Ct Diamond (Oval) | 30 Ct Quartz (Oval) | |
| 25.22×16.81 mm | vs | 26.96×17.97 mm |
| 347.64 mm² | 397.27 mm² |
| 30ct Diamond Oval (25.22×16.81mm) | |
| 30ct Quartz Oval (26.96×17.97mm) | |
| Difference: 14% (49.63 mm²) |
30ct Quartz (Oval, 26.96×17.97mm) has approx. 14% more face-up area than 30ct Diamond (Oval, 25.22×16.81mm).
Popular comparisons:
- 30ct Diamond (Oval, White, 25.22 x 16.81) vs. 15ct Diamond (Round, White, 16.03 x 16.03)
- 30ct Diamond (Oval, White, 25.22 x 16.81) vs. 5ct Diamond (Trillion, White, 13.23 x 13.23)
- 30ct Diamond (Oval, White, 25.22 x 16.81) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 30ct Diamond (Oval, White, 25.22 x 16.81) vs. 40ct Diamond (Oval, White, 27.75 x 18.5)
- 1ct Diamond (Oval, White, 8 x 6) vs. 1ct Sapphire (Oval, Blue, 7 x 5)
- 2ct Diamond (Oval, White, 10 x 7) vs. 1.8ct Diamond (Oval, White, 9 x 7)
- 2.5ct Diamond (Oval, White, 10 x 7) vs. 1ct Diamond (Oval, White, 9 x 6)
- 3.25ct Diamond (Oval, White, 12.02 x 8.01) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)