12ct Sapphire (Oval, 17.31×11.54mm, Dark Blue) vs 4ct Sapphire (Oval, 11×9mm, Dark Blue)
Quick summary: When looked from above (face-up position), 12ct Sapphire (17.31×11.54mm, oval cut) appears 2 times larger than 4ct Sapphire (11×9mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 12ct Sapphire (oval cut) |
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4ct Sapphire (oval cut) |
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dark blue |
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| 17.31×11.54 mm | 11×9 mm | |
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Actual sizes of
12ct Sapphire Oval (17.31×11.54mm, Dark Blue)
and
4ct Sapphire Oval (11×9mm, Dark 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.
| 12 Ct Sapphire (Oval) | 4 Ct Sapphire (Oval) | |
| 17.31×11.54 mm | vs | 11×9 mm |
| 163.8 mm² | 81.18 mm² |
| 12ct Sapphire Oval (17.31×11.54mm) | |
| 4ct Sapphire Oval (11×9mm) | |
| Difference: 102% (82.62 mm²) |
12ct Sapphire Oval (17.31×11.54mm) has approx. 102% more face-up area than 4ct Sapphire Oval (11×9mm). In other words, it's 2.02x larger.
Popular comparisons:
- 12ct Sapphire (Oval, Dark Blue, 17.31 x 11.54) vs. 8ct Sapphire (Oval, Dark Blue, 15.12 x 10.08)
- 12ct Sapphire (Oval, Dark Blue, 17.31 x 11.54) vs. 8ct Emerald (Emerald, Dark Green, 14.55 x 10.78)
- 12ct Sapphire (Oval, Dark Blue, 17.31 x 11.54) vs. 4ct Sapphire (Oval, Dark Blue, 12 x 8)
- 12ct Sapphire (Oval, Dark Blue, 17.31 x 11.54) vs. 2ct Sapphire (Oval, Dark Blue, 9 x 7)
- 12ct Sapphire (Oval, Dark Blue, 17.31 x 11.54) vs. 2.23ct Sapphire (Oval, Dark Blue, 9.42 x 6.21)
- 12ct Sapphire (Oval, Dark Blue, 17.31 x 11.54) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 12ct Sapphire (Oval, Dark Blue, 17.31 x 11.54) vs. 6ct Topaz (Oval, White, 14 x 10)
- 12ct Sapphire (Oval, Dark Blue, 17.31 x 11.54) vs. 7ct Emerald (Emerald, Dark Green, 13.92 x 10.31)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.