2ct Sapphire (Cabochon, 8.63×5.75mm, Blue) vs 2ct Diamond (Cabochon, 9×6mm, White)
Quick summary: When looked from above (face-up position), 2ct Diamond (9×6mm, cabochon cut) appears 9% larger than 2ct Sapphire (8.63×5.75mm, cabochon cut). See below how they compare side-by-side on a ring and finger.
| 2ct Sapphire (cabochon cut) |
vs
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2ct Diamond (cabochon cut) |
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blue |
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| 8.63×5.75 mm | 9×6 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
2ct Sapphire Cabochon (8.63×5.75mm, Blue)
and
2ct Diamond Cabochon (9×6mm, 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.
| 2 Ct Sapphire (Cabochon) | 2 Ct Diamond (Cabochon) | |
| 8.63×5.75 mm | vs | 9×6 mm |
| 40.69 mm² | 44.28 mm² |
| 2ct Sapphire Cabochon (8.63×5.75mm) | |
| 2ct Diamond Cabochon (9×6mm) | |
| Difference: 9% (3.59 mm²) |
2ct Diamond (Cabochon, 9×6mm) has approx. 9% more face-up area than 2ct Sapphire (Cabochon, 8.63×5.75mm).
Popular comparisons:
- 2ct Sapphire (Cabochon, Blue, 8.63 x 5.75) vs. 2ct Ruby (Oval, Red, 9.53 x 6.35)
- 2ct Sapphire (Cabochon, Blue, 8.63 x 5.75) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 2ct Sapphire (Cabochon, Blue, 8.63 x 5.75) vs. 1.92ct Sapphire (Cabochon, Blue, 8.51 x 5.67)
- 2ct Sapphire (Cabochon, Blue, 8.63 x 5.75) vs. 2ct Sapphire (Oval, Blue, 9.53 x 6.35)
- 2ct Sapphire (Cabochon, Blue, 8.63 x 5.75) vs. 2ct Ruby (Oval, Red, 8.85 x 6.4)
- 2ct Sapphire (Cabochon, Blue, 8.63 x 5.75) vs. 2ct Aquamarine (Princess, Light Blue, 7.72 x 7.72)
- 2ct Sapphire (Cabochon, Blue, 8.63 x 5.75) vs. 1ct Sapphire (Cabochon, Blue, 6.84 x 4.56)
- 2ct Sapphire (Cabochon, Blue, 8.63 x 5.75) vs. 2ct Diamond (Pear, White, 11.4 x 6.87)