4ct Sapphire (Oval, 12×8mm, Blue) vs 12ct Sapphire (Oval, 17.31×11.54mm, Blue)
Quick summary: When looked from above (face-up position), 12ct Sapphire (17.31×11.54mm, oval cut) appears 2.1 times larger than 4ct Sapphire (12×8mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 4ct Sapphire (oval cut) |
vs
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12ct Sapphire (oval cut) |
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blue |
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| 12×8 mm | 17.31×11.54 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
4ct Sapphire Oval (12×8mm, Blue)
and
12ct Sapphire Oval (17.31×11.54mm, 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.
| 4 Ct Sapphire (Oval) | 12 Ct Sapphire (Oval) | |
| 12×8 mm | vs | 17.31×11.54 mm |
| 78.72 mm² | 163.8 mm² |
| 4ct Sapphire Oval (12×8mm) | |
| 12ct Sapphire Oval (17.31×11.54mm) | |
| Difference: 108% (85.08 mm²) |
12ct Sapphire (Oval, 17.31×11.54mm) has approx. 108% more face-up area than 4ct Sapphire (Oval, 12×8mm). In other words, it's 2.08x larger.
Popular comparisons:
- 4ct Sapphire (Oval, Blue, 12 x 8) vs. 4ct Diamond (Oval, White, 12.89 x 8.59)
- 4ct Sapphire (Oval, Blue, 12 x 8) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 4ct Sapphire (Oval, Blue, 12 x 8) vs. 4ct Emerald (Emerald, Green, 11.56 x 8.56)
- 4ct Sapphire (Oval, Blue, 12 x 8) vs. 3ct Diamond (Oval, White, 11.7 x 7.8)
- 4ct Sapphire (Oval, Blue, 12 x 8) vs. 4ct Emerald (Oval, Green, 13.68 x 9.12)
- 4ct Sapphire (Oval, Blue, 12 x 8) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 4ct Sapphire (Oval, Blue, 12 x 8) vs. 5ct Emerald (Emerald, Green, 12.45 x 9.22)
- 4ct Sapphire (Oval, Blue, 12 x 8) vs. 1.8ct Diamond (Princess, White, 6.7 x 6.7)