7ct Diamond (Cushion, 11.15×11.15mm, White) vs 7ct Cubic Zirconia (Cushion, 9.44×9.44mm, White)
Quick summary: When looked from above (face-up position), 7ct Diamond (11.15×11.15mm, cushion cut) appears 40% larger than 7ct Cubic Zirconia (9.44×9.44mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 7ct Diamond (cushion cut) |
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7ct Cubic Zirconia (cushion cut) |
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white |
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| 11.15×11.15 mm | 9.44×9.44 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
7ct Diamond Cushion (11.15×11.15mm, White)
and
7ct Cubic Zirconia Cushion (9.44×9.44mm, 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, Cubic Zirconia will face-up smaller than Diamond for a given
carat weight, because it has higher specific gravity
(5.65 vs. 3.52 - this means it's "heavier" compared to Diamond 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.
| 7 Ct Diamond (Cushion) | 7 Ct Cubic Zirconia (Cushion) | |
| 11.15×11.15 mm | vs | 9.44×9.44 mm |
| 111.89 mm² | 80.2 mm² |
| 7ct Diamond Cushion (11.15×11.15mm) | |
| 7ct Cubic Zirconia Cushion (9.44×9.44mm) | |
| Difference: 40% (31.69 mm²) |
7ct Diamond (Cushion, 11.15×11.15mm) has approx. 40% more face-up area than 7ct Cubic Zirconia (Cushion, 9.44×9.44mm).
Popular comparisons:
- 7ct Diamond (Cushion, White, 11.15 x 11.15) vs. 5ct Diamond (Round, White, 11.11 x 11.11)
- 7ct Diamond (Cushion, White, 11.15 x 11.15) vs. 1.59ct Spinel (Oval, Red, 9.15 x 6.1)
- 7ct Diamond (Cushion, White, 11.15 x 11.15) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 7ct Diamond (Cushion, White, 11.15 x 11.15) vs. 5ct Diamond (Cushion, White, 10.5 x 9.4)
- 7ct Diamond (Cushion, White, 11.15 x 11.15) vs. 6ct Diamond (Emerald, White, 12.14 x 8.99)
- 7ct Diamond (Cushion, White, 11.15 x 11.15) vs. 7ct Spinel (Emerald, Red, 12.65 x 9.37)
- 7ct Diamond (Cushion, White, 11.15 x 11.15) vs. 5ct Diamond (Marquise, White, 17.76 x 8.88)
- 7ct Diamond (Cushion, White, 11.15 x 11.15) vs. 22ct Diamond (Round, White, 18.21 x 18.21)
- 7ct Diamond (Cushion, White, 11.15 x 11.15) vs. 8ct Diamond (Cushion, White, 11.65 x 11.65)