1ct Sapphire (Round, 6.5×6.5mm, Blue) vs 2.56ct Sapphire (Round, 7.78×7.78mm, Blue)
Quick summary: When looked from above (face-up position), 2.56ct Sapphire (7.78×7.78mm, round cut) appears 43% larger than 1ct Sapphire (6.5×6.5mm, round cut). See below how they compare side-by-side on a ring and finger.
| 1ct Sapphire (round cut) |
vs
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2.56ct Sapphire (round cut) |
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blue |
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| 6.5×6.5 mm | 7.78×7.78 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 Round (6.5×6.5mm, Blue)
and
2.56ct Sapphire Round (7.78×7.78mm, Blue)
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
The face-up size depends on the shape of the gem, its weight and 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.
| 1 Ct Sapphire (Round) | 2.56 Ct Sapphire (Round) | |
| 6.5×6.5 mm | vs | 7.78×7.78 mm |
| 33.18 mm² | 47.54 mm² |
| 1ct Sapphire Round (6.5×6.5mm) | |
| 2.56ct Sapphire Round (7.78×7.78mm) | |
| Difference: 43% (14.36 mm²) |
2.56ct Sapphire (Round, 7.78×7.78mm) has approx. 43% more face-up area than 1ct Sapphire (Round, 6.5×6.5mm).
Popular comparisons:
- 1ct Sapphire (Round, Blue, 6.5 x 6.5) vs. 1ct Sapphire (Cushion, Blue, 6 x 6)
- 1ct Sapphire (Round, Blue, 6.5 x 6.5) vs. 1ct Sapphire (Round, Blue, 6 x 6)
- 1ct Sapphire (Round, Blue, 6.5 x 6.5) vs. 1ct Sapphire (Round, Blue, 5.5 x 5.5)
- 1ct Sapphire (Round, Blue, 6.5 x 6.5) vs. 1ct Diamond (Round, White, 7 x 7)
- 1ct Sapphire (Round, Blue, 6.5 x 6.5) vs. 1.35ct Sapphire (Round, Light Purple, 7 x 7)
- 1ct Sapphire (Round, Blue, 6.5 x 6.5) vs. 1ct Zircon (Round, Blue, 6.5 x 6.5)
- 1ct Sapphire (Round, Blue, 6.5 x 6.5) vs. 1ct Sapphire (Cushion, Blue, 6.9 x 6)
- 1ct Sapphire (Round, Blue, 6.5 x 6.5) vs. 1.5ct Sapphire (Cushion, Blue, 6.4 x 6.4)