0.7ct Alexandrite (Cushion, 5×5mm, Bluish Green) vs 0.7ct Topaz (Round, 6×6mm, Bluish Green)
Quick summary: When looked from above (face-up position), 0.7ct Topaz (6×6mm, round cut) appears 26% larger than 0.7ct Alexandrite (5×5mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 0.7ct Alexandrite (cushion cut) |
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0.7ct Topaz (round cut) |
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bluish green |
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| 5×5 mm | 6×6 mm | |
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Actual sizes of
0.7ct Alexandrite Cushion (5×5mm, Bluish Green)
and
0.7ct Topaz Round (6×6mm, 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, Alexandrite will face-up smaller than Topaz for a given
carat weight, because it has higher specific gravity
(3.7 vs. 3.53 - this means it's "heavier" compared to Topaz 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 Alexandrite (Cushion) | 0.7 Ct Topaz (Round) | |
| 5×5 mm | vs | 6×6 mm |
| 22.5 mm² | 28.27 mm² |
| 0.7ct Alexandrite Cushion (5×5mm) | |
| 0.7ct Topaz Round (6×6mm) | |
| Difference: 26% (5.77 mm²) |
0.7ct Topaz Round (6×6mm) has approx. 26% more face-up area than 0.7ct Alexandrite Cushion (5×5mm).
Popular comparisons:
- 0.7ct Alexandrite (Cushion, Bluish Green, 5 x 5) vs. 1ct Topaz (Round, Bluish Green, 6 x 6)
- 1ct Alexandrite (Cushion, Bluish Green, 5.74 x 5.74) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 3ct Alexandrite (Cushion, Bluish Green, 8.28 x 8.28) vs. 3ct Diamond (Round, White, 9.37 x 9.37)
- 7.75ct Alexandrite (Cushion, Dark Bluish Green, 11 x 11) vs. 8.5ct Alexandrite (Oval, Dark Bluish Green, 14 x 10)
- 2.98ct Alexandrite (Cushion, Dark Violet, 9.5 x 7.1) vs. 1.54ct Diamond (Oval, Bluish Green, 9.65 x 6.42)
- 1ct Alexandrite (Cushion, Bluish Green, 5.5 x 5.5) vs. 1ct Topaz (Round, Dark Bluish Green, 6 x 6)
- 1ct Alexandrite (Cushion, Light Purple, 5.5 x 5.5) vs. 1ct Alexandrite (Round, Dark Bluish Green, 6 x 6)
- 1.2ct Alexandrite (Cushion, Bluish Green, 6 x 6) vs. 1.45ct Alexandrite (Pear, Bluish Green, 8 x 6)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.