4.93ct Ruby (Princess, 9.4×9.4mm, Red) vs 4ct Diamond (Princess, 8.75×8.75mm, White)
Quick summary: When looked from above (face-up position), 4.93ct Ruby (9.4×9.4mm, princess cut) appears 15% larger than 4ct Diamond (8.75×8.75mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 4.93ct Ruby (princess cut) |
vs
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4ct Diamond (princess cut) |
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red |
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| 9.4×9.4 mm | 8.75×8.75 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
4.93ct Ruby Princess (9.4×9.4mm, Red)
and
4ct Diamond Princess (8.75×8.75mm, 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.
| 4.93 Ct Ruby (Princess) | 4 Ct Diamond (Princess) | |
| 9.4×9.4 mm | vs | 8.75×8.75 mm |
| 88.36 mm² | 76.56 mm² |
| 4.93ct Ruby Princess (9.4×9.4mm) | |
| 4ct Diamond Princess (8.75×8.75mm) | |
| Difference: 15% (11.8 mm²) |
4.93ct Ruby (Princess, 9.4×9.4mm) has approx. 15% more face-up area than 4ct Diamond (Princess, 8.75×8.75mm).
Popular comparisons:
- 4.93ct Ruby (Princess, Red, 9.4 x 9.4) vs. 4.93ct Diamond (Princess, White, 9.38 x 9.38)
- 4.93ct Ruby (Princess, Red, 9.4 x 9.4) vs. 3.4ct Diamond (Oval, White, 12.21 x 8.14)
- 4.93ct Ruby (Princess, Red, 9.4 x 9.4) vs. 4.9ct Diamond (Princess, White, 9.36 x 9.36)
- 4.93ct Ruby (Princess, Red, 9.4 x 9.4) vs. 3.5ct Diamond (Marquise, White, 15.78 x 7.89)
- 4.93ct Ruby (Princess, Red, 9.4 x 9.4) vs. 3.5ct Diamond (Pear, White, 13.73 x 8.27)
- 4.93ct Ruby (Princess, Red, 9.4 x 9.4) vs. 3.41ct Diamond (Marquise, White, 15.64 x 7.82)
- 4.93ct Ruby (Princess, Red, 9.4 x 9.4) vs. 3.41ct Diamond (Marquise, White, 15.74 x 7.73)
- 4.93ct Ruby (Princess, Red, 9.4 x 9.4) vs. 3.5ct Diamond (Oval, White, 12.32 x 8.21)