5ct Sapphire (Cabochon, 11.7×7.8mm, Blue) vs 2ct Diamond (Round, 8.19×8.19mm, White)
Quick summary: When looked from above (face-up position), 5ct Sapphire (11.7×7.8mm, cabochon cut) appears 42% larger than 2ct Diamond (8.19×8.19mm, round cut). See below how they compare side-by-side on a ring and finger.
| 5ct Sapphire (cabochon cut) |
vs
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2ct Diamond (round cut) |
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blue |
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| 11.7×7.8 mm | 8.19×8.19 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
5ct Sapphire Cabochon (11.7×7.8mm, Blue)
and
2ct Diamond Round (8.19×8.19mm, 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, Sapphire 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 Sapphire (Cabochon) | 2 Ct Diamond (Round) | |
| 11.7×7.8 mm | vs | 8.19×8.19 mm |
| 74.83 mm² | 52.68 mm² |
| 5ct Sapphire Cabochon (11.7×7.8mm) | |
| 2ct Diamond Round (8.19×8.19mm) | |
| Difference: 42% (22.15 mm²) |
5ct Sapphire (Cabochon, 11.7×7.8mm) has approx. 42% more face-up area than 2ct Diamond (Round, 8.19×8.19mm).
Popular comparisons:
- 5ct Sapphire (Cabochon, Blue, 11.7 x 7.8) vs. 5ct Diamond (Round, White, 11.11 x 11.11)
- 5ct Sapphire (Cabochon, Blue, 11.7 x 7.8) vs. 3ct Diamond (Oval, White, 11.7 x 7.8)
- 5ct Sapphire (Cabochon, Blue, 11.7 x 7.8) vs. 1ct Diamond (Round, White, 6.5 x 6.5)
- 5ct Sapphire (Cabochon, Blue, 11.7 x 7.8) vs. 5ct Diamond (Oval, White, 13.88 x 9.25)
- 5ct Sapphire (Cabochon, Blue, 11.7 x 7.8) vs. 3ct Sapphire (Cabochon, Blue, 9.87 x 6.58)
- 5ct Sapphire (Cabochon, Blue, 11.7 x 7.8) vs. 5ct Diamond (Cabochon, White, 12.21 x 8.14)
- 5ct Sapphire (Cabochon, Blue, 11.7 x 7.8) vs. 3ct Diamond (Round, White, 9.37 x 9.37)
- 2ct Sapphire (Cabochon, Dark Blue, 8 x 6) vs. 2.27ct Sapphire (Cabochon, Light Blue, 8 x 6.1)