20ct Sapphire (Oval, 20.54×13.69mm, Blue) vs 8ct Emerald (Emerald, 14.55×10.78mm, Green)
Quick summary: When looked from above (face-up position), 20ct Sapphire (20.54×13.69mm, oval cut) appears 58% larger than 8ct Emerald (14.55×10.78mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 20ct Sapphire (oval cut) |
vs
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8ct Emerald (emerald cut) |
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blue |
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| 20.54×13.69 mm | 14.55×10.78 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
20ct Sapphire Oval (20.54×13.69mm, Blue)
and
8ct Emerald Emerald (14.55×10.78mm, 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
All things being equal, Sapphire will face-up smaller than Emerald for a given
carat weight, because it has higher specific gravity
(4 vs. 2.72 - this means it's "heavier" compared to Emerald 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.
| 20 Ct Sapphire (Oval) | 8 Ct Emerald (Emerald) | |
| 20.54×13.69 mm | vs | 14.55×10.78 mm |
| 230.58 mm² | 145.87 mm² |
| 20ct Sapphire Oval (20.54×13.69mm) | |
| 8ct Emerald Emerald (14.55×10.78mm) | |
| Difference: 58% (84.71 mm²) |
20ct Sapphire (Oval, 20.54×13.69mm) has approx. 58% more face-up area than 8ct Emerald (Emerald, 14.55×10.78mm).
Popular comparisons:
- 20ct Sapphire (Oval, Blue, 20.54 x 13.69) vs. 12ct Sapphire (Oval, Blue, 17.31 x 11.54)
- 20ct Sapphire (Oval, Blue, 20.54 x 13.69) vs. 1ct Peridot (Oval, Yellowish Green, 8.03 x 5.35)
- 20ct Sapphire (Oval, Blue, 20.54 x 13.69) vs. 20ct Ruby (Oval, Red, 20.54 x 13.69)
- 20ct Sapphire (Oval, Blue, 20.54 x 13.69) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 20ct Sapphire (Oval, Blue, 20.54 x 13.69) vs. 11ct Sapphire (Oval, Blue, 16.82 x 11.21)
- 20ct Sapphire (Oval, Blue, 20.54 x 13.69) vs. 18ct Sapphire (Oval, Blue, 19.82 x 13.21)
- 20ct Sapphire (Oval, Blue, 20.54 x 13.69) vs. 20ct Diamond (Oval, Blue, 22.04 x 14.69)
- 20ct Sapphire (Oval, Blue, 20.54 x 13.69) vs. 9ct Sapphire (Oval, Blue, 15.74 x 10.49)