2.75ct Sapphire (Oval, 9.36×7.38mm, Blue) vs 1ct Diamond (Round, 6.43×6.43mm, White)
Quick summary: When looked from above (face-up position), 2.75ct Sapphire (9.36×7.38mm, oval cut) appears 74% larger than 1ct Diamond (6.43×6.43mm, round cut). See below how they compare side-by-side on a ring and finger.
| 2.75ct Sapphire (oval cut) |
vs
|
1ct Diamond (round cut) |
|
blue |
|
|
| 9.36×7.38 mm | 6.43×6.43 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
2.75ct Sapphire Oval (9.36×7.38mm, Blue)
and
1ct Diamond Round (6.43×6.43mm, 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.
| 2.75 Ct Sapphire (Oval) | 1 Ct Diamond (Round) | |
| 9.36×7.38 mm | vs | 6.43×6.43 mm |
| 56.64 mm² | 32.47 mm² |
| 2.75ct Sapphire Oval (9.36×7.38mm) | |
| 1ct Diamond Round (6.43×6.43mm) | |
| Difference: 74% (24.17 mm²) |
2.75ct Sapphire (Oval, 9.36×7.38mm) has approx. 74% more face-up area than 1ct Diamond (Round, 6.43×6.43mm).
Popular comparisons:
- 2.75ct Sapphire (Oval, Blue, 9.36 x 7.38) vs. 2.78ct Sapphire (Round, Blue, 7.8 x 7.8)
- 2.75ct Sapphire (Oval, Blue, 9.36 x 7.38) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)
- 2ct Sapphire (Oval, Blue, 9.53 x 6.35) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 1.5ct Sapphire (Oval, Blue, 8.66 x 5.77) vs. 1.52ct Diamond (Oval, White, 9.33 x 6.22)
- 5ct Sapphire (Oval, Blue, 12.93 x 8.62) vs. 5ct Diamond (Oval, White, 13.88 x 9.25)
- 2.5ct Sapphire (Oval, White, 9 x 7) vs. 2.5ct Diamond (Oval, White, 9 x 7)
- 3ct Sapphire (Oval, Blue, 10.91 x 7.27) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 1.52ct Sapphire (Oval, Blue, 8.7 x 5.8) vs. 0.92ct Diamond (Round, White, 6.32 x 6.32)
Use the simulator on this page to play around with different ring and finger configurations.