1ct Ruby (Emerald, 6.39×4.73mm, Red) vs 1ct Diamond (Round, 6.5×6.5mm, White)
Quick summary: When looked from above (face-up position), 1ct Diamond (6.5×6.5mm, round cut) appears 18% larger than 1ct Ruby (6.39×4.73mm, emerald cut). See below how they compare side-by-side on a ring and finger.
| 1ct Ruby (emerald cut) |
vs
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1ct Diamond (round cut) |
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red |
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| 6.39×4.73 mm | 6.5×6.5 mm | |
| actual size | ||
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Actual size is set for screen
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Ring:
Skin tone:
Ring width: 3.0 mm
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64 mm |
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Actual sizes of
1ct Ruby Emerald (6.39×4.73mm, Red)
and
1ct Diamond Round (6.5×6.5mm, 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 (Emerald) | 1 Ct Diamond (Round) | |
| 6.39×4.73 mm | vs | 6.5×6.5 mm |
| 28.11 mm² | 33.18 mm² |
| 1ct Ruby Emerald (6.39×4.73mm) | |
| 1ct Diamond Round (6.5×6.5mm) | |
| Difference: 18% (5.07 mm²) |
1ct Diamond (Round, 6.5×6.5mm) has approx. 18% more face-up area than 1ct Ruby (Emerald, 6.39×4.73mm).
Popular comparisons:
- 1ct Ruby (Emerald, Red, 6.39 x 4.73) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Ruby (Emerald, Red, 6.39 x 4.73) vs. 1ct Diamond (Emerald, White, 6.68 x 4.95)
- 1ct Ruby (Emerald, Red, 6.39 x 4.73) vs. 0.2ct Diamond (Round, White, 3.8 x 3.8)
- 1ct Ruby (Emerald, Red, 6.39 x 4.73) vs. 10ct Emerald (Emerald, Green, 15.69 x 11.62)
- 1ct Ruby (Emerald, Red, 6.39 x 4.73) vs. 5ct Ruby (Emerald, Red, 10.92 x 8.09)
- 1ct Ruby (Emerald, Red, 6.39 x 4.73) vs. 0.56ct Ruby (Emerald, Red, 5.9 x 4)
- 1ct Ruby (Emerald, Red, 6.39 x 4.73) vs. 21ct Emerald (Emerald, Green, 20.09 x 14.88)
- 1ct Ruby (Emerald, Red, 6.39 x 4.73) vs. 0.88ct Diamond (Emerald, White, 6.4 x 4.74)