12ct Diamond (Cabochon, 16.35×10.9mm, White) vs 12ct Emerald (Cabochon, 17.82×11.88mm, Green)
Quick summary: When looked from above (face-up position), 12ct Emerald (17.82×11.88mm, cabochon cut) appears 19% larger than 12ct Diamond (16.35×10.9mm, cabochon cut). See below how they compare side-by-side on a ring and finger.
| 12ct Diamond (cabochon cut) |
vs
|
12ct Emerald (cabochon cut) |
|
white |
|
|
| 16.35×10.9 mm | 17.82×11.88 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
12ct Diamond Cabochon (16.35×10.9mm, White)
and
12ct Emerald Cabochon (17.82×11.88mm, 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, Diamond will face-up smaller than Emerald for a given
carat weight, because it has higher specific gravity
(3.52 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 Diamond (Cabochon) | 12 Ct Emerald (Cabochon) | |
| 16.35×10.9 mm | vs | 17.82×11.88 mm |
| 146.14 mm² | 173.6 mm² |
| 12ct Diamond Cabochon (16.35×10.9mm) | |
| 12ct Emerald Cabochon (17.82×11.88mm) | |
| Difference: 19% (27.46 mm²) |
12ct Emerald (Cabochon, 17.82×11.88mm) has approx. 19% more face-up area than 12ct Diamond (Cabochon, 16.35×10.9mm).
Popular comparisons:
- 12ct Diamond (Cabochon, White, 16.35 x 10.9) vs. 2ct Diamond (Pear, White, 11.4 x 6.87)
- 1ct Diamond (Cabochon, White, 7.14 x 4.76) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1.82ct Diamond (Cabochon, White, 7.25 x 6.5) vs. 1.39ct Diamond (Round, White, 7.25 x 7.25)
- 2ct Diamond (Cabochon, White, 9 x 6) vs. 2ct Diamond (Emerald, White, 8.42 x 6.24)
- 1ct Diamond (Cabochon, White, 7.14 x 4.76) vs. 1ct Citrine (Princess, Light Orange, 6.17 x 6.17)
- 1ct Diamond (Cabochon, White, 7.14 x 4.76) vs. 1ct Diamond (Trillion, White, 7.74 x 7.74)
- 1.7ct Diamond (Cabochon, White, 8.52 x 5.68) vs. 1.7ct Diamond (Oval, White, 9.31 x 6.8)
- 3ct Diamond (Cabochon, Yellow, 10.31 x 6.87) vs. 3ct Sapphire (Cabochon, Yellow, 9.87 x 6.58)
- 1ct Diamond (Cabochon, White, 7.14 x 4.76) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)