8ct Diamond (Pear, 18.09×10.9mm, White) vs 8ct Cubic Zirconia (Pear, 15.16×9.13mm, White)
Quick summary: When looked from above (face-up position), 8ct Diamond (18.09×10.9mm, pear cut) appears 42% larger than 8ct Cubic Zirconia (15.16×9.13mm, pear cut). See below how they compare side-by-side on a ring and finger.
| 8ct Diamond (pear cut) |
vs
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8ct Cubic Zirconia (pear cut) |
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white |
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| 18.09×10.9 mm | 15.16×9.13 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
8ct Diamond Pear (18.09×10.9mm, White)
and
8ct Cubic Zirconia Pear (15.16×9.13mm, 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.
| 8 Ct Diamond (Pear) | 8 Ct Cubic Zirconia (Pear) | |
| 18.09×10.9 mm | vs | 15.16×9.13 mm |
| 143.94 mm² | 101.04 mm² |
| 8ct Diamond Pear (18.09×10.9mm) | |
| 8ct Cubic Zirconia Pear (15.16×9.13mm) | |
| Difference: 42% (42.9 mm²) |
8ct Diamond (Pear, 18.09×10.9mm) has approx. 42% more face-up area than 8ct Cubic Zirconia (Pear, 15.16×9.13mm).
Popular comparisons:
- 8ct Diamond (Pear, White, 18.09 x 10.9) vs. 12ct Diamond (Pear, White, 20.72 x 12.48)
- 8ct Diamond (Pear, White, 18.09 x 10.9) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 8ct Diamond (Pear, White, 18.09 x 10.9) vs. 5ct Diamond (Emerald, White, 11.42 x 8.46)
- 8ct Diamond (Pear, White, 18.09 x 10.9) vs. 10ct Diamond (Pear, White, 19.49 x 11.74)
- 8ct Diamond (Pear, White, 18.09 x 10.9) vs. 8ct Emerald (Pear, Dark Green, 18.94 x 11.41)
- 8ct Diamond (Pear, White, 18.09 x 10.9) vs. 8ct Diamond (Round, White, 13 x 13)
- 8ct Diamond (Pear, White, 18.09 x 10.9) vs. 4ct Diamond (Pear, White, 14.36 x 8.65)
- 8ct Diamond (Pear, White, 18.09 x 10.9) vs. 20ct Diamond (Pear, White, 24.55 x 14.79)
- 8ct Diamond (Pear, White, 18.09 x 10.9) vs. 9ct Tourmaline (Cushion, Violet, 12.66 x 12.66)