8ct Sapphire (Oval, 15.12×10.08mm, Blue) vs 12ct Sapphire (Oval, 18×12mm, Blue)
Quick summary: When looked from above (face-up position), 12ct Sapphire (18×12mm, oval cut) appears 42% larger than 8ct Sapphire (15.12×10.08mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 8ct Sapphire (oval cut) |
vs
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12ct Sapphire (oval cut) |
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blue |
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| 15.12×10.08 mm | 18×12 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 Sapphire Oval (15.12×10.08mm, Blue)
and
12ct Sapphire Oval (18×12mm, 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.
| 8 Ct Sapphire (Oval) | 12 Ct Sapphire (Oval) | |
| 15.12×10.08 mm | vs | 18×12 mm |
| 124.98 mm² | 177.12 mm² |
| 8ct Sapphire Oval (15.12×10.08mm) | |
| 12ct Sapphire Oval (18×12mm) | |
| Difference: 42% (52.14 mm²) |
12ct Sapphire (Oval, 18×12mm) has approx. 42% more face-up area than 8ct Sapphire (Oval, 15.12×10.08mm).
Popular comparisons:
- 8ct Sapphire (Oval, Blue, 15.12 x 10.08) vs. 9ct Sapphire (Oval, Blue, 15.74 x 10.49)
- 8ct Sapphire (Oval, Blue, 15.12 x 10.08) vs. 0.85ct Sapphire (Oval, Blue, 7.17 x 4.78)
- 8ct Sapphire (Oval, Blue, 15.12 x 10.08) vs. 8ct Tanzanite (Emerald, Blue, 13.62 x 10.09)
- 8ct Sapphire (Oval, Blue, 15.12 x 10.08) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 8ct Sapphire (Oval, Blue, 15.12 x 10.08) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 8ct Sapphire (Oval, Blue, 15.12 x 10.08) vs. 5ct Citrine (Emerald, Yellow, 12.53 x 9.28)
- 8ct Sapphire (Oval, Blue, 15.12 x 10.08) vs. 4ct Citrine (Emerald, Yellow, 11.62 x 8.61)
- 8ct Sapphire (Oval, Blue, 15.12 x 10.08) vs. 8ct Diamond (Oval, White, 16.23 x 10.82)