12ct Sapphire (Oval, 17.31×11.54mm, Dark Blue) vs 8ct Emerald (Emerald, 14.55×10.78mm, Dark Green)
Quick summary: When looked from above (face-up position), 12ct Sapphire (17.31×11.54mm, oval cut) appears 12% larger than 8ct Emerald (14.55×10.78mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 12ct Sapphire (oval cut) |
vs
|
8ct Emerald (emerald cut) |
|
dark blue |
|
|
| 17.31×11.54 mm | 14.55×10.78 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
12ct Sapphire Oval (17.31×11.54mm, Dark Blue)
and
8ct Emerald Emerald (14.55×10.78mm, Dark Green)
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 Emerald for a given
carat weight, because it has higher specific gravity
(4 vs. 2.72 - this means it's "heavier" compared to Emerald 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.
| 12 Ct Sapphire (Oval) | 8 Ct Emerald (Emerald) | |
| 17.31×11.54 mm | vs | 14.55×10.78 mm |
| 163.8 mm² | 145.87 mm² |
| 12ct Sapphire Oval (17.31×11.54mm) | |
| 8ct Emerald Emerald (14.55×10.78mm) | |
| Difference: 12% (17.93 mm²) |
12ct Sapphire (Oval, 17.31×11.54mm) has approx. 12% more face-up area than 8ct Emerald (Emerald, 14.55×10.78mm).
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. 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. 4ct Sapphire (Oval, Dark Blue, 11 x 9)
- 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)