5ct Ruby (Trillion, 12.02×12.02mm, Red) vs 5ct Diamond (Cabochon, 12.21×8.14mm, White)
Quick summary: When looked from above (face-up position), 5ct Ruby (12.02×12.02mm, trillion cut) appears 10% larger than 5ct Diamond (12.21×8.14mm, cabochon cut). See below how they compare side-by-side on a ring and finger.
| 5ct Ruby (trillion cut) |
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5ct Diamond (cabochon cut) |
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red |
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| 12.02×12.02 mm | 12.21×8.14 mm | |
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Actual sizes of
5ct Ruby Trillion (12.02×12.02mm, Red)
and
5ct Diamond Cabochon (12.21×8.14mm, 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.
| 5 Ct Ruby (Trillion) | 5 Ct Diamond (Cabochon) | |
| 12.02×12.02 mm | vs | 12.21×8.14 mm |
| 89.58 mm² | 81.5 mm² |
| 5ct Ruby Trillion (12.02×12.02mm) | |
| 5ct Diamond Cabochon (12.21×8.14mm) | |
| Difference: 10% (8.08 mm²) |
5ct Ruby Trillion (12.02×12.02mm) has approx. 10% more face-up area than 5ct Diamond Cabochon (12.21×8.14mm).
Popular comparisons:
- 5ct Ruby (Trillion, Red, 12.02 x 12.02) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 5ct Ruby (Trillion, Red, 12.02 x 12.02) vs. 8ct Sapphire (Marquise, Dark Blue, 19.74 x 9.87)
- 14ct Ruby (Trillion, Red, 16.94 x 16.94) vs. 5ct Ruby (Marquise, Red, 16.88 x 8.44)
- 1ct Ruby (Trillion, Red, 7.03 x 7.03) vs. 0.44ct Ruby (Trillion, Red, 5.35 x 5.35)
- 1.15ct Ruby (Trillion, Red, 7.36 x 7.36) vs. 1.56ct Ruby (Trillion, Red, 8.15 x 8.15)
- 2.5ct Ruby (Trillion, Red, 9.54 x 9.54) vs. 4.3ct Ruby (Round, Red, 9.72 x 9.72)
- 0.5ct Ruby (Trillion, Red, 5.58 x 5.58) vs. 3ct Topaz (Emerald, Light Violet, 9.6 x 7.11)
- 1ct Ruby (Trillion, Red, 7.03 x 7.03) vs. 0.85ct Ruby (Oval, Red, 7.17 x 4.78)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.