1.55ct Diamond (Round, 7.52×7.52mm, White) vs 2ct Ruby (Round, 7.53×7.53mm, Red)
Quick summary: When looked from above (face-up position), 2ct Ruby (7.53×7.53mm, round cut) appears 0.3% larger than 1.55ct Diamond (7.52×7.52mm, round cut). See below how they compare side-by-side on a ring and finger.
| 1.55ct Diamond (round cut) |
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2ct Ruby (round cut) |
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white |
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| 7.52×7.52 mm | 7.53×7.53 mm | |
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Actual sizes of
1.55ct Diamond Round (7.52×7.52mm, White)
and
2ct Ruby Round (7.53×7.53mm, Red)
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.
| 1.55 Ct Diamond (Round) | 2 Ct Ruby (Round) | |
| 7.52×7.52 mm | vs | 7.53×7.53 mm |
| 44.41 mm² | 44.53 mm² |
| 1.55ct Diamond Round (7.52×7.52mm) | |
| 2ct Ruby Round (7.53×7.53mm) | |
| Difference: 0.3% (0.12 mm²) |
2ct Ruby Round (7.53×7.53mm) has approx. 0.3% more face-up area than 1.55ct Diamond Round (7.52×7.52mm).
Popular comparisons:
- 1.55ct Diamond (Round, White, 7.52 x 7.52) vs. 1.2ct Diamond (Round, White, 6.91 x 6.91)
- 1.55ct Diamond (Round, White, 7.52 x 7.52) vs. 1.76ct Diamond (Round, White, 7.65 x 7.73)
- 1.55ct Diamond (Round, White, 7.52 x 7.52) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1.55ct Diamond (Round, White, 7.52 x 7.52) vs. 1ct Diamond (Round, White, 7 x 7)
- 1.55ct Diamond (Round, White, 7.52 x 7.52) vs. 1.65ct Diamond (Round, White, 7.68 x 7.68)
- 1.55ct Diamond (Round, White, 7.52 x 7.52) vs. 2ct Sapphire (Round, Blue, 7.53 x 7.53)
- 1.55ct Diamond (Round, White, 7.52 x 7.52) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 1.55ct Diamond (Round, White, 7.52 x 7.52) vs. 1.03ct Diamond (Round, White, 6.56 x 6.56)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.