1.8ct Diamond (Cushion, 7.09×7.09mm, White) vs 1.8ct Sapphire (Cushion, 6.8×6.8mm, Blue)
Quick summary: When looked from above (face-up position), 1.8ct Diamond (7.09×7.09mm, cushion cut) appears 9% larger than 1.8ct Sapphire (6.8×6.8mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 1.8ct Diamond (cushion cut) |
vs
|
1.8ct Sapphire (cushion cut) |
|
white |
|
|
| 7.09×7.09 mm | 6.8×6.8 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
1.8ct Diamond Cushion (7.09×7.09mm, White)
and
1.8ct Sapphire Cushion (6.8×6.8mm, 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 Diamond for a given
carat weight, because it has higher specific gravity
(4 vs. 3.52 - this means it's "heavier" compared to Diamond 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.
| 1.8 Ct Diamond (Cushion) | 1.8 Ct Sapphire (Cushion) | |
| 7.09×7.09 mm | vs | 6.8×6.8 mm |
| 45.24 mm² | 41.62 mm² |
| 1.8ct Diamond Cushion (7.09×7.09mm) | |
| 1.8ct Sapphire Cushion (6.8×6.8mm) | |
| Difference: 9% (3.62 mm²) |
1.8ct Diamond (Cushion, 7.09×7.09mm) has approx. 9% more face-up area than 1.8ct Sapphire (Cushion, 6.8×6.8mm).
Popular comparisons:
- 1.8ct Diamond (Cushion, White, 7.09 x 7.09) vs. 1.8ct Diamond (Cabochon, White, 8.69 x 5.79)
- 1.8ct Diamond (Cushion, White, 7.09 x 7.09) vs. 2ct Diamond (Cushion, White, 7.34 x 7.34)
- 1.8ct Diamond (Cushion, White, 7.09 x 7.09) vs. 1.4ct Diamond (Cushion, White, 6.92 x 6.2)
- 1.8ct Diamond (Cushion, White, 7.09 x 7.09) vs. 1.8ct Diamond (Emerald, White, 8.13 x 6.02)
- 1.8ct Diamond (Cushion, White, 7.09 x 7.09) vs. 1.15ct Diamond (Emerald, Light Yellowish Green, 7 x 5)
- 1.8ct Diamond (Cushion, White, 7.09 x 7.09) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1.8ct Diamond (Cushion, White, 7.09 x 7.09) vs. 1.8ct Diamond (Round, White, 7.91 x 7.91)
- 1.8ct Diamond (Cushion, White, 7.09 x 7.09) vs. 1.8ct Diamond (Oval, White, 9.87 x 6.58)