3ct Ruby (Oval, 10.91×7.27mm, Red) vs 4ct Sapphire (Oval, 12×8mm, Blue)
Quick summary: When looked from above (face-up position), 4ct Sapphire (12×8mm, oval cut) appears 21% larger than 3ct Ruby (10.91×7.27mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 3ct Ruby (oval cut) |
vs
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4ct Sapphire (oval cut) |
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red |
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| 10.91×7.27 mm | 12×8 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 Oval (10.91×7.27mm, Red)
and
4ct Sapphire Oval (12×8mm, Blue)
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
Ruby and Sapphire have the same specific gravity so their face-up size
depends on the weight, shape and 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 (Oval) | 4 Ct Sapphire (Oval) | |
| 10.91×7.27 mm | vs | 12×8 mm |
| 65.04 mm² | 78.72 mm² |
| 3ct Ruby Oval (10.91×7.27mm) | |
| 4ct Sapphire Oval (12×8mm) | |
| Difference: 21% (13.68 mm²) |
4ct Sapphire (Oval, 12×8mm) has approx. 21% more face-up area than 3ct Ruby (Oval, 10.91×7.27mm).
Popular comparisons:
- 3ct Ruby (Oval, Red, 10.91 x 7.27) vs. 3ct Sapphire (Oval, Blue, 10.91 x 7.27)
- 3ct Ruby (Oval, Red, 10.91 x 7.27) vs. 5ct Ruby (Oval, Red, 12.93 x 8.62)
- 3ct Ruby (Oval, Red, 10.91 x 7.27) vs. 5ct Ruby (Round, Red, 10.22 x 10.22)
- 3ct Ruby (Oval, Red, 10.91 x 7.27) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 3ct Ruby (Oval, Red, 10.91 x 7.27) vs. 2ct Ruby (Round, Red, 7.53 x 7.53)
- 3ct Ruby (Oval, Red, 10.91 x 7.27) vs. 2.5ct Diamond (Oval, White, 11.01 x 7.34)
- 3ct Ruby (Oval, Red, 10.91 x 7.27) vs. 3ct Diamond (Oval, White, 11.7 x 7.8)
- 3ct Ruby (Oval, Red, 10.91 x 7.27) vs. 3ct Tanzanite (Oval, Blue, 11.63 x 7.75)