1ct Diamond (Round, 6.5×6.5mm, Light Gray) vs 1ct Sapphire (Round, 5.98×5.98mm, White)
Quick summary: When looked from above (face-up position), 1ct Colored Diamond (6.5×6.5mm, round cut) appears 18% larger than 1ct Sapphire (5.98×5.98mm, round cut). See below how they compare side-by-side on a ring and finger.
| 1ct Diamond (round cut) |
vs
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1ct Sapphire (round cut) |
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light gray |
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| 6.5×6.5 mm | 5.98×5.98 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 Diamond Round (6.5×6.5mm, Light Gray)
and
1ct Sapphire Round (5.98×5.98mm, 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.
| 1 Ct Colored Diamond (Round) | 1 Ct Sapphire (Round) | |
| 6.5×6.5 mm | vs | 5.98×5.98 mm |
| 33.18 mm² | 28.09 mm² |
| 1ct Colored Diamond Round (6.5×6.5mm) | |
| 1ct Sapphire Round (5.98×5.98mm) | |
| Difference: 18% (5.09 mm²) |
1ct Colored Diamond (Round, 6.5×6.5mm) has approx. 18% more face-up area than 1ct Sapphire (Round, 5.98×5.98mm).
Popular comparisons:
- 1ct Diamond (Round, Light Gray, 6.5 x 6.5) vs. 1ct Diamond (Oval, White, 7.7 x 5.7)
- 1ct Diamond (Round, Light Gray, 6.5 x 6.5) vs. 1ct Diamond (Cushion, White, 5.86 x 5.86)
- 1ct Diamond (Round, Light Gray, 6.5 x 6.5) vs. 1.2ct Diamond (Round, Light Gray, 6.91 x 6.91)
- 1ct Diamond (Round, Light Gray, 6.5 x 6.5) vs. 0.8ct Diamond (Round, White, 5.88 x 5.9)
- 1ct Diamond (Round, Light Gray, 6.5 x 6.5) vs. 1ct Diamond (Oval, White, 7.5 x 5.5)
- 1ct Diamond (Round, Light Gray, 6.5 x 6.5) vs. 1.21ct Diamond (Princess, Light Gray, 6.07 x 5.9)
- 1ct Diamond (Round, Light Gray, 6.5 x 6.5) vs. 1ct Fluorite (Round, Light Gray, 6.45 x 6.45)
- 1ct Diamond (Round, Light Gray, 6.5 x 6.5) vs. 1.23ct Sapphire (Round, Light Gray, 6.41 x 6.41)