15ct Ruby (Oval, 18.92×12.61mm, Red) vs 15ct Andesine (Oval, 21.63×14.42mm, Orange)
Quick summary: When looked from above (face-up position), 15ct Andesine (21.63×14.42mm, oval cut) appears 31% larger than 15ct Ruby (18.92×12.61mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 15ct Ruby (oval cut) |
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15ct Andesine (oval cut) |
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red |
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| 18.92×12.61 mm | 21.63×14.42 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
15ct Ruby Oval (18.92×12.61mm, Red)
and
15ct Andesine Oval (21.63×14.42mm, Orange)
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 Andesine for a given
carat weight, because it has higher specific gravity
(4 vs. 2.67 - this means it's "heavier" compared to Andesine 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.
| 15 Ct Ruby (Oval) | 15 Ct Andesine (Oval) | |
| 18.92×12.61 mm | vs | 21.63×14.42 mm |
| 195.64 mm² | 255.76 mm² |
| 15ct Ruby Oval (18.92×12.61mm) | |
| 15ct Andesine Oval (21.63×14.42mm) | |
| Difference: 31% (60.12 mm²) |
15ct Andesine (Oval, 21.63×14.42mm) has approx. 31% more face-up area than 15ct Ruby (Oval, 18.92×12.61mm).
Popular comparisons:
- 4ct Ruby (Oval, Red, 11 x 8.15) vs. 2.75ct Diamond (Oval, White, 11.37 x 7.58)
- 2ct Ruby (Oval, Red, 9.53 x 6.35) vs. 1.13ct Diamond (Round, White, 6.77 x 6.77)
- 0.65ct Ruby (Oval, Red, 6.56 x 4.37) vs. 1.2ct Diamond (Round, White, 6.4 x 6.4)
- 1ct Ruby (Oval, Red, 7 x 5) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)
- 3ct Ruby (Oval, Red, 10.91 x 7.27) vs. 3ct Sapphire (Oval, Blue, 10.91 x 7.27)
- 1.2ct Ruby (Oval, Red, 8.65 x 6.61) vs. 1.2ct Ruby (Round, Red, 6.5 x 6.5)
- 15ct Ruby (Oval, Red, 18.66 x 12.44) vs. 14ct Ruby (Oval, Red, 18.23 x 12.15)
- 7ct Ruby (Oval, Red, 14.48 x 9.65) vs. 4ct Diamond (Cushion, White, 9.25 x 9.25)
- 1ct Ruby (Oval, Red, 7 x 5) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)