5ct Ruby (Cabochon, 11.7×7.8mm, Red) vs 5ct Diamond (Cabochon, 12.21×8.14mm, White)
Quick summary: When looked from above (face-up position), 5ct Diamond (12.21×8.14mm, cabochon cut) appears 9% larger than 5ct Ruby (11.7×7.8mm, cabochon cut). See below how they compare side-by-side on a ring and finger.
| 5ct Ruby (cabochon cut) |
vs
|
5ct Diamond (cabochon cut) |
|
red |
|
|
| 11.7×7.8 mm | 12.21×8.14 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
5ct Ruby Cabochon (11.7×7.8mm, Red)
and
5ct Diamond Cabochon (12.21×8.14mm, 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, Ruby 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.
| 5 Ct Ruby (Cabochon) | 5 Ct Diamond (Cabochon) | |
| 11.7×7.8 mm | vs | 12.21×8.14 mm |
| 74.83 mm² | 81.5 mm² |
| 5ct Ruby Cabochon (11.7×7.8mm) | |
| 5ct Diamond Cabochon (12.21×8.14mm) | |
| Difference: 9% (6.67 mm²) |
5ct Diamond (Cabochon, 12.21×8.14mm) has approx. 9% more face-up area than 5ct Ruby (Cabochon, 11.7×7.8mm).
Popular comparisons:
- 5ct Ruby (Cabochon, Red, 11.7 x 7.8) vs. 8ct Ruby (Cabochon, Red, 13.68 x 9.12)
- 5ct Ruby (Cabochon, Red, 11.7 x 7.8) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 5ct Ruby (Cabochon, Red, 11.7 x 7.8) vs. 1ct Ruby (Cushion, Red, 5.59 x 5.59)
- 5ct Ruby (Cabochon, Red, 11.7 x 7.8) vs. 1ct Ruby (Oval, Red, 7.56 x 5.04)
- 5ct Ruby (Cabochon, Red, 11.7 x 7.8) vs. 1ct Sapphire (Cabochon, Blue, 6.84 x 4.56)
- 5ct Ruby (Cabochon, Red, 11.7 x 7.8) vs. 5ct Ruby (Round, Red, 10.22 x 10.22)
- 3ct Ruby (Cabochon, Red, 9.87 x 6.58) vs. 5ct Ruby (Oval, Red, 12.93 x 8.62)
- 1.3ct Ruby (Cabochon, Red, 7.47 x 4.98) vs. 0.13ct Diamond (Round, White, 3.29 x 3.29)