3ct Ruby (Princess, 7.75×7.75mm, Red) vs 3ct Diamond (Princess, 7.95×7.95mm, White)
Quick summary: When looked from above (face-up position), 3ct Diamond (7.95×7.95mm, princess cut) appears 5% larger than 3ct Ruby (7.75×7.75mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 3ct Ruby (princess cut) |
vs
|
3ct Diamond (princess cut) |
|
red |
|
|
| 7.75×7.75 mm | 7.95×7.95 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
3ct Ruby Princess (7.75×7.75mm, Red)
and
3ct Diamond Princess (7.95×7.95mm, 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.
| 3 Ct Ruby (Princess) | 3 Ct Diamond (Princess) | |
| 7.75×7.75 mm | vs | 7.95×7.95 mm |
| 60.06 mm² | 63.2 mm² |
| 3ct Ruby Princess (7.75×7.75mm) | |
| 3ct Diamond Princess (7.95×7.95mm) | |
| Difference: 5% (3.14 mm²) |
3ct Diamond (Princess, 7.95×7.95mm) has approx. 5% more face-up area than 3ct Ruby (Princess, 7.75×7.75mm).
Popular comparisons:
- 3ct Ruby (Princess, Red, 7.75 x 7.75) vs. 5ct Ruby (Round, Red, 10.22 x 10.22)
- 3ct Ruby (Princess, Red, 7.75 x 7.75) vs. 5ct Ruby (Princess, Red, 9.19 x 9.19)
- 3ct Ruby (Princess, Red, 7.75 x 7.75) vs. 2ct Diamond (Princess, White, 6.94 x 6.94)
- 3ct Ruby (Princess, Red, 7.75 x 7.75) vs. 1ct Hiddenite (Emerald, Light Green , 6.9 x 5.11)
- 3ct Ruby (Princess, Red, 7.75 x 7.75) vs. 4ct Ruby (Baguette, Red, 11 x 7.33)
- 3ct Ruby (Princess, Red, 7.75 x 7.75) vs. 4ct Ruby (Emerald, Red, 10.14 x 7.51)
- 3ct Ruby (Princess, Red, 7.75 x 7.75) vs. 8ct Ruby (Princess, Red, 10.75 x 10.75)
- 3ct Ruby (Princess, Red, 7.75 x 7.75) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)