3ct Ruby (Round, 8.62×8.62mm, Red) vs 4ct Ruby (Round, 9.49×9.49mm, Red)
Quick summary: When looked from above (face-up position), 4ct Ruby (9.49×9.49mm, round cut) appears 21% larger than 3ct Ruby (8.62×8.62mm, round cut). See below how they compare side-by-side on a ring and finger.
| 3ct Ruby (round cut) |
vs
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4ct Ruby (round cut) |
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red |
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| 8.62×8.62 mm | 9.49×9.49 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
3ct Ruby Round (8.62×8.62mm, Red)
and
4ct Ruby Round (9.49×9.49mm, 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
The face-up size depends on the shape of the gem, its weight and 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.
| 3 Ct Ruby (Round) | 4 Ct Ruby (Round) | |
| 8.62×8.62 mm | vs | 9.49×9.49 mm |
| 58.36 mm² | 70.73 mm² |
| 3ct Ruby Round (8.62×8.62mm) | |
| 4ct Ruby Round (9.49×9.49mm) | |
| Difference: 21% (12.37 mm²) |
4ct Ruby (Round, 9.49×9.49mm) has approx. 21% more face-up area than 3ct Ruby (Round, 8.62×8.62mm).
Popular comparisons:
- 3ct Ruby (Round, Red, 8.62 x 8.62) vs. 5ct Ruby (Round, Red, 10.22 x 10.22)
- 3ct Ruby (Round, Red, 8.62 x 8.62) vs. 7ct Ruby (Round, Red, 11.44 x 11.44)
- 3ct Ruby (Round, Red, 8.62 x 8.62) vs. 3ct Diamond (Round, White, 9.37 x 9.37)
- 3ct Ruby (Round, Red, 8.62 x 8.62) vs. 2ct Ruby (Round, Red, 7.53 x 7.53)
- 3ct Ruby (Round, Red, 8.62 x 8.62) vs. 3ct Diamond (Emerald, White, 9.64 x 7.14)
- 3ct Ruby (Round, Red, 8.62 x 8.62) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 3ct Ruby (Round, Red, 8.62 x 8.62) vs. 10ct Ruby (Oval, Red, 16.29 x 10.86)
- 3ct Ruby (Round, Red, 8.62 x 8.62) vs. 3ct Emerald (Emerald, Green, 10.5 x 7.78)