4ct Emerald (Oval, 13.68×9.12mm, Green) vs 4ct Ruby (Oval, 12×8mm, Red)
Quick summary: When looked from above (face-up position), 4ct Emerald (13.68×9.12mm, oval cut) appears 30% larger than 4ct Ruby (12×8mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 4ct Emerald (oval cut) |
vs
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4ct Ruby (oval cut) |
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green |
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| 13.68×9.12 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
4ct Emerald Oval (13.68×9.12mm, Green)
and
4ct Ruby Oval (12×8mm, 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 Emerald for a given
carat weight, because it has higher specific gravity
(4 vs. 2.72 - this means it's "heavier" compared to Emerald 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 Ct Emerald (Oval) | 4 Ct Ruby (Oval) | |
| 13.68×9.12 mm | vs | 12×8 mm |
| 102.3 mm² | 78.72 mm² |
| 4ct Emerald Oval (13.68×9.12mm) | |
| 4ct Ruby Oval (12×8mm) | |
| Difference: 30% (23.58 mm²) |
4ct Emerald (Oval, 13.68×9.12mm) has approx. 30% more face-up area than 4ct Ruby (Oval, 12×8mm).
Popular comparisons:
- 4ct Emerald (Oval, Green, 13.68 x 9.12) vs. 5ct Emerald (Pear, Green, 16.19 x 9.75)
- 4ct Emerald (Oval, Green, 13.68 x 9.12) vs. 4ct Tanzanite (Oval, Blue, 12.8 x 8.53)
- 4ct Emerald (Oval, Green, 13.68 x 9.12) vs. 4ct Quartz (Round, Orangey Red, 10.89 x 10.89)
- 4ct Emerald (Oval, Green, 13.68 x 9.12) vs. 4ct Sapphire (Oval, Blue, 13.6 x 8)
- 4ct Emerald (Oval, Green, 13.68 x 9.12) vs. 2.2ct Morganite (Oval, Light Brown, 11.22 x 7.48)
- 4ct Emerald (Oval, Green, 13.68 x 9.12) vs. 2ct Diamond (Emerald, White, 8.42 x 6.24)
- 4ct Emerald (Oval, Green, 13.68 x 9.12) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 4ct Emerald (Oval, Green, 13.68 x 9.12) vs. 4ct Tourmaline (Oval, Violet, 13.07 x 8.71)