18ct Sapphire (Emerald, 16.74×12.4mm, Blue) vs 1ct Emerald (Emerald, 7.28×5.39mm, Green)
Quick summary: When looked from above (face-up position), 18ct Sapphire (16.74×12.4mm, emerald cut) appears 5.3 times larger than 1ct Emerald (7.28×5.39mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 18ct Sapphire (emerald cut) |
vs
|
1ct Emerald (emerald cut) |
|
blue |
|
|
| 16.74×12.4 mm | 7.28×5.39 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
18ct Sapphire Emerald (16.74×12.4mm, Blue)
and
1ct Emerald Emerald (7.28×5.39mm, 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.
| 18 Ct Sapphire (Emerald) | 1 Ct Emerald (Emerald) | |
| 16.74×12.4 mm | vs | 7.28×5.39 mm |
| 193.05 mm² | 36.49 mm² |
| 18ct Sapphire Emerald (16.74×12.4mm) | |
| 1ct Emerald Emerald (7.28×5.39mm) | |
| Difference: 429% (156.56 mm²) |
18ct Sapphire (Emerald, 16.74×12.4mm) has approx. 429% more face-up area than 1ct Emerald (Emerald, 7.28×5.39mm). In other words, it's 5.29x larger.
Popular comparisons:
- 18ct Sapphire (Emerald, Blue, 16.74 x 12.4) vs. 12ct Quartz (Emerald, Blue, 16.77 x 12.42)
- 18ct Sapphire (Emerald, Blue, 16.74 x 12.4) vs. 8ct Aquamarine (Emerald, Light Blue, 14.55 x 10.78)
- 1ct Sapphire (Emerald, Blue, 7 x 5) vs. 1ct Sapphire (Oval, Blue, 7 x 5)
- 2ct Sapphire (Emerald, Blue, 8.05 x 5.96) vs. 2ct Diamond (Emerald, White, 8.42 x 6.24)
- 2ct Sapphire (Emerald, Blue, 8.05 x 5.96) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 3ct Sapphire (Emerald, Blue, 10 x 8) vs. 3ct Sapphire (Round, Blue, 8.62 x 8.62)
- 1ct Sapphire (Emerald, Blue, 6.39 x 4.73) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 4.2ct Sapphire (Emerald, Blue, 10.3 x 7.63) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)