1ct Sapphire (Oval, 7.56×5.04mm, Dark Blue) vs 1ct Diamond (Marquise, 9.99×5.22mm, Light Bluish Green)
Quick summary: When looked from above (face-up position), 1ct Colored Diamond (9.99×5.22mm, marquise cut) appears 19% larger than 1ct Sapphire (7.56×5.04mm, oval cut). See below how they compare side-by-side on a ring and finger.
| 1ct Sapphire (oval cut) |
vs
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1ct Diamond (marquise cut) |
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dark blue |
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| 7.56×5.04 mm | 9.99×5.22 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
1ct Sapphire Oval (7.56×5.04mm, Dark Blue)
and
1ct Diamond Marquise (9.99×5.22mm, Light Bluish Green)
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.
| 1 Ct Sapphire (Oval) | 1 Ct Colored Diamond (Marquise) | |
| 7.56×5.04 mm | vs | 9.99×5.22 mm |
| 31.24 mm² | 37.02 mm² |
| 1ct Sapphire Oval (7.56×5.04mm) | |
| 1ct Colored Diamond Marquise (9.99×5.22mm) | |
| Difference: 19% (5.78 mm²) |
1ct Colored Diamond (Marquise, 9.99×5.22mm) has approx. 19% more face-up area than 1ct Sapphire (Oval, 7.56×5.04mm).
Popular comparisons:
- 1ct Sapphire (Oval, Dark Blue, 7.56 x 5.04) vs. 1ct Diamond (Oval, White, 8.12 x 5.41)
- 1ct Sapphire (Oval, Dark Blue, 7.56 x 5.04) vs. 1ct Spinel (Oval, Dark Blue, 7.83 x 5.22)
- 1ct Sapphire (Oval, Dark Blue, 7.56 x 5.04) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Sapphire (Oval, Dark Blue, 7.56 x 5.04) vs. 0.7ct Diamond (Round, White, 5.77 x 5.77)
- 1ct Sapphire (Oval, Dark Blue, 7.56 x 5.04) vs. 2ct Sapphire (Oval, Dark Blue, 9.53 x 6.35)
- 1ct Sapphire (Oval, Dark Blue, 7.56 x 5.04) vs. 1.5ct Sapphire (Oval, Dark Blue, 8.66 x 5.77)
- 1ct Sapphire (Oval, Dark Blue, 7.56 x 5.04) vs. 1ct Sapphire (Oval, Blue, 7.56 x 5.04)
- 1ct Sapphire (Oval, Dark Blue, 7.56 x 5.04) vs. 1ct Sapphire (Oval, Dark Blue, 7 x 5.5)