18ct Kyanite (Emerald, 17.21×12.75mm, Blue) vs 18ct Sapphire (Emerald, 16.74×12.4mm, Blue)
Quick summary: When looked from above (face-up position), 18ct Kyanite (17.21×12.75mm, emerald cut) appears 6% larger than 18ct Sapphire (16.74×12.4mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 18ct Kyanite (emerald cut) |
vs
|
18ct Sapphire (emerald cut) |
|
blue |
|
|
| 17.21×12.75 mm | 16.74×12.4 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
18ct Kyanite Emerald (17.21×12.75mm, Blue)
and
18ct Sapphire Emerald (16.74×12.4mm, 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
All things being equal, Sapphire will face-up smaller than Kyanite for a given
carat weight, because it has higher specific gravity
(4 vs. 3.68 - this means it's "heavier" compared to Kyanite 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 Kyanite (Emerald) | 18 Ct Sapphire (Emerald) | |
| 17.21×12.75 mm | vs | 16.74×12.4 mm |
| 204.07 mm² | 193.05 mm² |
| 18ct Kyanite Emerald (17.21×12.75mm) | |
| 18ct Sapphire Emerald (16.74×12.4mm) | |
| Difference: 6% (11.02 mm²) |
18ct Kyanite (Emerald, 17.21×12.75mm) has approx. 6% more face-up area than 18ct Sapphire (Emerald, 16.74×12.4mm).
Popular comparisons:
- 5ct Kyanite (Emerald, Blue, 11.23 x 8.32) vs. 5ct Tanzanite (Emerald, Blue, 11.64 x 8.62)
- 4.7ct Kyanite (Emerald, Light Bluish Green, 11 x 8.15) vs. 3.5ct Diamond (Emerald, White, 10.14 x 7.51)
- 2ct Kyanite (Emerald, Blue, 8.28 x 6.13) vs. 4ct Sapphire (Cushion, Blue, 8.88 x 8.88)
- 1ct Kyanite (Emerald, Blue, 6.56 x 4.86) vs. 1ct Tanzanite (Emerald, Blue, 6.8 x 5.04)
- 2ct Kyanite (Emerald, Blue, 8.28 x 6.13) vs. 2ct Chrysoberyl (Emerald, Light Yellowish Green, 8.26 x 6.12)
- 4ct Kyanite (Emerald, Light Bluish Green, 10.42 x 7.72) vs. 3.5ct Diamond (Emerald, White, 10.14 x 7.51)
- 1ct Kyanite (Emerald, Blue, 6.56 x 4.86) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1.5ct Kyanite (Emerald, Blue, 7.52 x 5.57) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2ct Kyanite (Emerald, Blue, 8.28 x 6.13) vs. 2ct Diamond (Round, White, 8.19 x 8.19)