8ct Diamond (Round, 13×13mm, White) vs 8ct Ruby (Round, 11.96×11.96mm, Red)
Quick summary: When looked from above (face-up position), 8ct Diamond (13×13mm, round cut) appears 18% larger than 8ct Ruby (11.96×11.96mm, round cut). See below how they compare side-by-side on a ring and finger.
| 8ct Diamond (round cut) |
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8ct Ruby (round cut) |
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white |
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| 13×13 mm | 11.96×11.96 mm | |
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Actual sizes of
8ct Diamond Round (13×13mm, White)
and
8ct Ruby Round (11.96×11.96mm, 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.
| 8 Ct Diamond (Round) | 8 Ct Ruby (Round) | |
| 13×13 mm | vs | 11.96×11.96 mm |
| 132.73 mm² | 112.34 mm² |
| 8ct Diamond Round (13×13mm) | |
| 8ct Ruby Round (11.96×11.96mm) | |
| Difference: 18% (20.39 mm²) |
8ct Diamond Round (13×13mm) has approx. 18% more face-up area than 8ct Ruby Round (11.96×11.96mm).
Popular comparisons:
- 8ct Diamond (Round, White, 13 x 13) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 8ct Diamond (Round, White, 13 x 13) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 8ct Diamond (Round, White, 13 x 13) vs. 8ct Diamond (Emerald, White, 13.37 x 9.9)
- 8ct Diamond (Round, White, 13 x 13) vs. 10ct Diamond (Round, White, 14 x 14)
- 8ct Diamond (Round, White, 13 x 13) vs. 5.6ct Diamond (Marquise, White, 17 x 9.5)
- 8ct Diamond (Round, White, 13 x 13) vs. 1ct Emerald (Round, Green, 6.82 x 6.82)
- 8ct Diamond (Round, White, 13 x 13) vs. 1.34ct Ruby (Oval, Red, 8.34 x 5.56)
- 8ct Diamond (Round, White, 13 x 13) vs. 22ct Diamond (Round, White, 18.21 x 18.21)
Enter your screen size (diagonal)
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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.