0.08ct Sapphire (Round, 2.58×2.58mm, Blue) vs 1ct Topaz (Oval, 7.89×5.26mm, Blue)
Quick summary: When looked from above (face-up position), 1ct Topaz (7.89×5.26mm, oval cut) appears 6.5 times larger than 0.08ct Sapphire (2.58×2.58mm, round cut). See below how they compare side-by-side on a ring and finger.
| 0.08ct Sapphire (round cut) |
vs
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1ct Topaz (oval cut) |
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blue |
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| 2.58×2.58 mm | 7.89×5.26 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
0.08ct Sapphire Round (2.58×2.58mm, Blue)
and
1ct Topaz Oval (7.89×5.26mm, 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
All things being equal, Sapphire will face-up smaller than Topaz for a given
carat weight, because it has higher specific gravity
(4 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.
| 0.08 Ct Sapphire (Round) | 1 Ct Topaz (Oval) | |
| 2.58×2.58 mm | vs | 7.89×5.26 mm |
| 5.23 mm² | 34.03 mm² |
| 0.08ct Sapphire Round (2.58×2.58mm) | |
| 1ct Topaz Oval (7.89×5.26mm) | |
| Difference: 551% (28.8 mm²) |
1ct Topaz (Oval, 7.89×5.26mm) has approx. 551% more face-up area than 0.08ct Sapphire (Round, 2.58×2.58mm). In other words, it's 6.51x larger.
Popular comparisons:
- 0.08ct Sapphire (Round, Blue, 2.58 x 2.58) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.08ct Sapphire (Round, Blue, 2.58 x 2.58) vs. 0.1ct Sapphire (Round, Blue, 2.77 x 2.77)
- 0.08ct Sapphire (Round, Blue, 2.58 x 2.58) vs. 0.5ct Sapphire (Round, Blue, 4.75 x 4.75)
- 0.08ct Sapphire (Round, Blue, 2.58 x 2.58) vs. 0.4ct Diamond (Round, White, 4.79 x 4.79)
- 0.08ct Sapphire (Round, Blue, 2.58 x 2.58) vs. 0.05ct Diamond (Round, White, 2.39 x 2.39)
- 0.08ct Sapphire (Round, Blue, 2.58 x 2.58) vs. 0.6ct Sapphire (Oval, Blue, 6.38 x 4.25)
- 0.08ct Sapphire (Round, Blue, 2.58 x 2.58) vs. 1.21ct Sapphire (Oval, Blue, 8.06 x 5.37)
- 0.08ct Sapphire (Round, Blue, 2.58 x 2.58) vs. 1ct Tourmaline (Emerald, Violet, 6.95 x 5.15)