3.4ct Sapphire (Cushion, 8.41×8.41mm, Blue) vs 3ct Diamond (Cushion, 8.4×8.4mm, White)
Quick summary: When looked from above (face-up position), 3.4ct Sapphire (8.41×8.41mm, cushion cut) appears 0.3% larger than 3ct Diamond (8.4×8.4mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 3.4ct Sapphire (cushion cut) |
vs
|
3ct Diamond (cushion cut) |
|
blue |
|
|
| 8.41×8.41 mm | 8.4×8.4 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
3.4ct Sapphire Cushion (8.41×8.41mm, Blue)
and
3ct Diamond Cushion (8.4×8.4mm, White)
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.
| 3.4 Ct Sapphire (Cushion) | 3 Ct Diamond (Cushion) | |
| 8.41×8.41 mm | vs | 8.4×8.4 mm |
| 63.66 mm² | 63.5 mm² |
| 3.4ct Sapphire Cushion (8.41×8.41mm) | |
| 3ct Diamond Cushion (8.4×8.4mm) | |
| Difference: 0.3% (0.16 mm²) |
3.4ct Sapphire (Cushion, 8.41×8.41mm) has approx. 0.3% more face-up area than 3ct Diamond (Cushion, 8.4×8.4mm).
Popular comparisons:
- 3.4ct Sapphire (Cushion, Blue, 8.41 x 8.41) vs. 3.85ct Sapphire (Oval, Blue, 10 x 8)
- 3.4ct Sapphire (Cushion, Blue, 8.41 x 8.41) vs. 3.4ct Diamond (Cushion, White, 8.76 x 8.76)
- 12ct Sapphire (Cushion, Blue, 12.8 x 12.8) vs. 2ct Ruby (Cushion, Red, 7.04 x 7.04)
- 3.59ct Sapphire (Cushion, Blue, 8.2 x 8.3) vs. 6.22ct Emerald (Emerald, Green, 12.4 x 10.9)
- 2ct Sapphire (Cushion, Blue, 7.04 x 7.04) vs. 2ct Diamond (Cushion, White, 7.34 x 7.34)
- 4.13ct Sapphire (Cushion, Blue, 9.91 x 7.48) vs. 4.57ct Sapphire (Oval, Blue, 11.31 x 8.15)
- 0.2ct Sapphire (Cushion, Blue, 3.27 x 3.27) vs. 1ct Tourmaline (Pear, Violet, 9.05 x 5.45)
- 3.5ct Sapphire (Cushion, Blue, 9.5 x 8.5) vs. 3.5ct Sapphire (Cushion, Blue, 10 x 8)