3.7ct Sapphire (Oval, 11.7×7.8mm, Blue) vs 13ct Sapphire (Oval, 17.79×11.86mm, Blue)
Quick summary: When looked from above (face-up position), 13ct Sapphire (17.79×11.86mm, oval cut) appears 2.3 times larger than 3.7ct Sapphire (11.7×7.8mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 3.7ct Sapphire (oval cut) |
vs
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13ct Sapphire (oval cut) |
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blue |
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| 11.7×7.8 mm | 17.79×11.86 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
3.7ct Sapphire Oval (11.7×7.8mm, Blue)
and
13ct Sapphire Oval (17.79×11.86mm, Blue)
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
The face-up size depends on the shape of the gem, its weight and 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.
| 3.7 Ct Sapphire (Oval) | 13 Ct Sapphire (Oval) | |
| 11.7×7.8 mm | vs | 17.79×11.86 mm |
| 74.83 mm² | 173.01 mm² |
| 3.7ct Sapphire Oval (11.7×7.8mm) | |
| 13ct Sapphire Oval (17.79×11.86mm) | |
| Difference: 131% (98.18 mm²) |
13ct Sapphire (Oval, 17.79×11.86mm) has approx. 131% more face-up area than 3.7ct Sapphire (Oval, 11.7×7.8mm). In other words, it's 2.31x larger.
Popular comparisons:
- 3.7ct Sapphire (Oval, Blue, 11.7 x 7.8) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 3.7ct Sapphire (Oval, Blue, 11.7 x 7.8) vs. 3.5ct Sapphire (Oval, Blue, 11.49 x 7.66)
- 3.7ct Sapphire (Oval, Blue, 11.7 x 7.8) vs. 12ct Sapphire (Oval, Blue, 17.31 x 11.54)
- 3.7ct Sapphire (Oval, Blue, 11.7 x 7.8) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 3.7ct Sapphire (Oval, Blue, 11.7 x 7.8) vs. 2.51ct Sapphire (Oval, Blue, 10.28 x 6.85)
- 3.7ct Sapphire (Oval, Blue, 11.7 x 7.8) vs. 3.4ct Sapphire (Oval, Blue, 11.37 x 7.58)
- 2ct Sapphire (Oval, Blue, 9.53 x 6.35) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 1.5ct Sapphire (Oval, Blue, 8.66 x 5.77) vs. 1.52ct Diamond (Oval, White, 9.33 x 6.22)