19ct Tourmaline (Marquise, 28.36×14.18mm, Purple) vs 19ct Quartz (Marquise, 29.76×14.88mm, Brown)
Quick summary: When looked from above (face-up position), 19ct Quartz (29.76×14.88mm, marquise cut) appears 10% larger than 19ct Tourmaline (28.36×14.18mm, marquise cut). See below how they compare side-by-side on a ring and finger.
| 19ct Tourmaline (marquise cut) |
vs
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19ct Quartz (marquise cut) |
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purple |
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| 28.36×14.18 mm | 29.76×14.88 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
19ct Tourmaline Marquise (28.36×14.18mm, Purple)
and
19ct Quartz Marquise (29.76×14.88mm, 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, Tourmaline will face-up smaller than Quartz for a given
carat weight, because it has higher specific gravity
(3.06 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.
| 19 Ct Tourmaline (Marquise) | 19 Ct Quartz (Marquise) | |
| 28.36×14.18 mm | vs | 29.76×14.88 mm |
| 285.52 mm² | 314.41 mm² |
| 19ct Tourmaline Marquise (28.36×14.18mm) | |
| 19ct Quartz Marquise (29.76×14.88mm) | |
| Difference: 10% (28.89 mm²) |
19ct Quartz (Marquise, 29.76×14.88mm) has approx. 10% more face-up area than 19ct Tourmaline (Marquise, 28.36×14.18mm).
Popular comparisons:
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 2.5ct Sapphire (Marquise, Blue, 13.4 x 6.7)
- 1.09ct Tourmaline (Marquise, Dark Violet, 11.06 x 5.53) vs. 1.21ct Diamond (Marquise, White, 11.06 x 5.53)
- 1ct Tourmaline (Marquise, Violet, 10.74 x 5.37) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.75ct Tourmaline (Marquise, Bluish Green, 9.7 x 4.15) vs. 0.74ct Tourmaline (Cushion, Bluish Green, 5.78 x 4.78)
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 2.5ct Diamond (Marquise, White, 14.1 x 7.05)
- 1.58ct Tourmaline (Marquise, Violet, 12.52 x 6.26) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2ct Tourmaline (Marquise, Light Green , 13.54 x 6.77) vs. 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29)
- 2.5ct Tourmaline (Marquise, Violet, 14.58 x 7.29) vs. 2ct Tourmaline (Marquise, Violet, 13.54 x 6.77)
- 2ct Tourmaline (Marquise, Dark Green, 13.54 x 6.77) vs. 2ct Emerald (Marquise, Green, 14.18 x 7.09)