0.75ct Ruby (Princess, 4.88×4.88mm, Red) vs 1ct Diamond (Princess, 5.51×5.51mm, Black)
Quick summary: When looked from above (face-up position), 1ct Diamond (5.51×5.51mm, princess cut) appears 28% larger than 0.75ct Ruby (4.88×4.88mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 0.75ct Ruby (princess cut) |
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1ct Diamond (princess cut) |
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red |
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| 4.88×4.88 mm | 5.51×5.51 mm | |
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Actual sizes of
0.75ct Ruby Princess (4.88×4.88mm, Red)
and
1ct Diamond Princess (5.51×5.51mm, Black)
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.
| 0.75 Ct Ruby (Princess) | 1 Ct Diamond (Princess) | |
| 4.88×4.88 mm | vs | 5.51×5.51 mm |
| 23.81 mm² | 30.36 mm² |
| 0.75ct Ruby Princess (4.88×4.88mm) | |
| 1ct Diamond Princess (5.51×5.51mm) | |
| Difference: 28% (6.55 mm²) |
1ct Diamond Princess (5.51×5.51mm) has approx. 28% more face-up area than 0.75ct Ruby Princess (4.88×4.88mm).
Popular comparisons:
- 0.75ct Ruby (Princess, Red, 4.88 x 4.88) vs. 0.75ct Sapphire (Round, Blue, 5.43 x 5.43)
- 0.75ct Ruby (Princess, Red, 4.88 x 4.88) vs. 0.75ct Diamond (Princess, Black, 5.01 x 5.01)
- 0.75ct Ruby (Princess, Red, 4.88 x 4.88) vs. 0.5ct Ruby (Princess, Red, 4.27 x 4.27)
- 0.75ct Ruby (Princess, Red, 4.88 x 4.88) vs. 0.75ct Sapphire (Baguette, Blue, 6.3 x 4.2)
- 2ct Ruby (Princess, Red, 6.77 x 6.77) vs. 2ct Diamond (Princess, White, 6.94 x 6.94)
- 0.8ct Ruby (Princess, Red, 4.99 x 4.99) vs. 0.9ct Sapphire (Princess, Blue, 5.19 x 5.19)
- 0.27ct Ruby (Princess, Red, 3.5 x 3.5) vs. 0.36ct Ruby (Princess, Red, 4 x 4)
- 0.8ct Ruby (Princess, Red, 4.99 x 4.99) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
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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.