1ct Ruby (Trillion, 7.03×7.03mm, Red) vs 2ct Diamond (Round, 8.19×8.19mm, White)
Quick summary: When looked from above (face-up position), 2ct Diamond (8.19×8.19mm, round cut) appears 72% larger than 1ct Ruby (7.03×7.03mm, trillion cut). See below how they compare side-by-side on a ring and finger.
| 1ct Ruby (trillion cut) |
vs
|
2ct Diamond (round cut) |
|
red |
|
|
| 7.03×7.03 mm | 8.19×8.19 mm | |
| actual size | ||
|
|
|
|
|
||
Actual size is set for screen
|
Ring:
Skin tone:
Ring width: 3.0 mm
|
|
64 mm |
|
|
|||||||||||||||||
|
|||||||||||||||||||||
Actual sizes of
1ct Ruby Trillion (7.03×7.03mm, Red)
and
2ct Diamond Round (8.19×8.19mm, 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.
| 1 Ct Ruby (Trillion) | 2 Ct Diamond (Round) | |
| 7.03×7.03 mm | vs | 8.19×8.19 mm |
| 30.64 mm² | 52.68 mm² |
| 1ct Ruby Trillion (7.03×7.03mm) | |
| 2ct Diamond Round (8.19×8.19mm) | |
| Difference: 72% (22.04 mm²) |
2ct Diamond (Round, 8.19×8.19mm) has approx. 72% more face-up area than 1ct Ruby (Trillion, 7.03×7.03mm).
Popular comparisons:
- 1ct Ruby (Trillion, Red, 7.03 x 7.03) vs. 0.44ct Ruby (Trillion, Red, 5.35 x 5.35)
- 1ct Ruby (Trillion, Red, 7.03 x 7.03) vs. 0.85ct Ruby (Oval, Red, 7.17 x 4.78)
- 1ct Ruby (Trillion, Red, 7.03 x 7.03) vs. 0.65ct Emerald (Trillion, Green, 6.94 x 6.94)
- 1ct Ruby (Trillion, Red, 7.03 x 7.03) vs. 0.56ct Ruby (Trillion, Red, 5.79 x 5.79)
- 1ct Ruby (Trillion, Red, 7.03 x 7.03) vs. 2.57ct Ruby (Emerald, Red, 8.75 x 6.48)
- 1ct Ruby (Trillion, Red, 7.03 x 7.03) vs. 1.15ct Diamond (Emerald, White, 7.01 x 5.19)
- 1ct Ruby (Trillion, Red, 7.03 x 7.03) vs. 1ct Spinel (Round, Red, 6.19 x 6.19)
- 1ct Ruby (Trillion, Red, 7.03 x 7.03) vs. 2.69ct Ruby (Trillion, Red, 9.78 x 9.78)