9ct Sapphire (Oval, 15.74×10.49mm, Blue) vs 20ct Diamond (Oval, 22.04×14.69mm, White)
Quick summary: When looked from above (face-up position), 20ct Diamond (22.04×14.69mm, oval cut) appears 96% larger than 9ct Sapphire (15.74×10.49mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 9ct Sapphire (oval cut) |
vs
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20ct Diamond (oval cut) |
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blue |
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| 15.74×10.49 mm | 22.04×14.69 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
9ct Sapphire Oval (15.74×10.49mm, Blue)
and
20ct Diamond Oval (22.04×14.69mm, 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, Sapphire will face-up smaller than Diamond for a given
carat weight, because it has higher specific gravity
(4 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.
| 9 Ct Sapphire (Oval) | 20 Ct Diamond (Oval) | |
| 15.74×10.49 mm | vs | 22.04×14.69 mm |
| 135.39 mm² | 265.49 mm² |
| 9ct Sapphire Oval (15.74×10.49mm) | |
| 20ct Diamond Oval (22.04×14.69mm) | |
| Difference: 96% (130.1 mm²) |
20ct Diamond (Oval, 22.04×14.69mm) has approx. 96% more face-up area than 9ct Sapphire (Oval, 15.74×10.49mm).
Popular comparisons:
- 9ct Sapphire (Oval, Blue, 15.74 x 10.49) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 9ct Sapphire (Oval, Blue, 15.74 x 10.49) vs. 9ct Diamond (Oval, White, 16.88 x 11.25)
- 9ct Sapphire (Oval, Blue, 15.74 x 10.49) vs. 10ct Sapphire (Oval, Blue, 16.29 x 10.86)
- 9ct Sapphire (Oval, Blue, 15.74 x 10.49) vs. 12ct Diamond (Oval, White, 18.59 x 12.39)
- 9ct Sapphire (Oval, Blue, 15.74 x 10.49) vs. 7ct Diamond (Oval, White, 15.53 x 10.35)
- 9ct Sapphire (Oval, Blue, 15.74 x 10.49) vs. 7.5ct Diamond (Oval, White, 15.89 x 10.59)
- 9ct Sapphire (Oval, Blue, 15.74 x 10.49) vs. 9ct Emerald (Oval, Green, 17.94 x 11.96)
- 9ct Sapphire (Oval, Blue, 15.74 x 10.49) vs. 17ct Sapphire (Oval, Blue, 19.46 x 12.97)