18ct Topaz (Baguette, 18.93×12.62mm, Blue) vs 18ct Quartz (Baguette, 20.84×13.89mm, Brown)
Quick summary: When looked from above (face-up position), 18ct Quartz (20.84×13.89mm, baguette cut) appears 21% larger than 18ct Topaz (18.93×12.62mm, baguette cut). See below how they compare side-by-side on a ring and finger.
| 18ct Topaz (baguette cut) |
vs
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18ct Quartz (baguette cut) |
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blue |
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| 18.93×12.62 mm | 20.84×13.89 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
18ct Topaz Baguette (18.93×12.62mm, Blue)
and
18ct Quartz Baguette (20.84×13.89mm, Brown)
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, Topaz will face-up smaller than Quartz for a given
carat weight, because it has higher specific gravity
(3.53 vs. 2.65 - this means it's "heavier" compared to Quartz 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.
| 18 Ct Topaz (Baguette) | 18 Ct Quartz (Baguette) | |
| 18.93×12.62 mm | vs | 20.84×13.89 mm |
| 238.9 mm² | 289.47 mm² |
| 18ct Topaz Baguette (18.93×12.62mm) | |
| 18ct Quartz Baguette (20.84×13.89mm) | |
| Difference: 21% (50.57 mm²) |
18ct Quartz (Baguette, 20.84×13.89mm) has approx. 21% more face-up area than 18ct Topaz (Baguette, 18.93×12.62mm).
Popular comparisons:
- 1ct Topaz (Baguette, Blue, 7.23 x 4.82) vs. 0.1ct Emerald (Round, Green, 3.16 x 3.16)
- 30.94ct Topaz (Baguette, Orange, 22.68 x 15.12) vs. 1.96ct Peridot (Oval, Yellowish Green, 10.04 x 6.69)
- 1ct Topaz (Baguette, Blue, 7.23 x 4.82) vs. 0.5ct Topaz (Round, Blue, 5 x 5)
- 0.2ct Topaz (Baguette, Light Blue, 4.23 x 2.82) vs. 1ct Aquamarine (Oval, Light Bluish Green, 8.63 x 5.75)
- 2ct Topaz (Baguette, Blue, 9.11 x 6.07) vs. 1.5ct Topaz (Round, Light Blue, 7.13 x 7.13)
- 2ct Topaz (Baguette, Blue, 9.11 x 6.07) vs. 1ct Topaz (Round, Blue, 6.23 x 6.23)
- 2.5ct Topaz (Baguette, Blue, 9.81 x 6.54) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1ct Topaz (Baguette, White, 7.23 x 4.82) vs. 1ct Topaz (Oval, White, 7.89 x 5.26)
- 3.36ct Topaz (Baguette, Blue, 10.82 x 7.21) vs. 2.22ct Tourmaline (Emerald, Dark Bluish Green, 9 x 6)