0.7ct Sapphire (Round, 5.31×5.31mm, Blue) vs 1.21ct Diamond (Round, 6.93×6.93mm, White)
Quick summary: When looked from above (face-up position), 1.21ct Diamond (6.93×6.93mm, round cut) appears 70% larger than 0.7ct Sapphire (5.31×5.31mm, round cut). See below how they compare side-by-side on a ring and finger.
| 0.7ct Sapphire (round cut) |
vs
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1.21ct Diamond (round cut) |
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blue |
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| 5.31×5.31 mm | 6.93×6.93 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
0.7ct Sapphire Round (5.31×5.31mm, Blue)
and
1.21ct Diamond Round (6.93×6.93mm, 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.
| 0.7 Ct Sapphire (Round) | 1.21 Ct Diamond (Round) | |
| 5.31×5.31 mm | vs | 6.93×6.93 mm |
| 22.15 mm² | 37.72 mm² |
| 0.7ct Sapphire Round (5.31×5.31mm) | |
| 1.21ct Diamond Round (6.93×6.93mm) | |
| Difference: 70% (15.57 mm²) |
1.21ct Diamond (Round, 6.93×6.93mm) has approx. 70% more face-up area than 0.7ct Sapphire (Round, 5.31×5.31mm).
Popular comparisons:
- 0.7ct Sapphire (Round, Blue, 5.31 x 5.31) vs. 0.7ct Diamond (Round, White, 5.77 x 5.77)
- 0.7ct Sapphire (Round, Blue, 5.31 x 5.31) vs. 0.5ct Diamond (Round, White, 5.16 x 5.16)
- 0.7ct Sapphire (Round, Blue, 5.31 x 5.31) vs. 0.5ct Sapphire (Round, Blue, 4.75 x 4.75)
- 0.7ct Sapphire (Round, Blue, 5.31 x 5.31) vs. 0.75ct Sapphire (Oval, Blue, 6.87 x 4.58)
- 0.7ct Sapphire (Round, Blue, 5.31 x 5.31) vs. 0.7ct Topaz (Round, Blue, 5.53 x 5.53)
- 0.7ct Sapphire (Round, Blue, 5.31 x 5.31) vs. 0.25ct Diamond (Round, White, 4.09 x 4.09)
- 0.7ct Sapphire (Round, Blue, 5.31 x 5.31) vs. 2ct Diamond (Oval, White, 10.23 x 6.82)
- 0.7ct Sapphire (Round, Blue, 5.31 x 5.31) vs. 0.7ct Diamond (Oval, White, 7.2 x 4.8)