1ct Tourmaline (Trillion, 7.65×7.65mm, Violet) vs 1ct Diopside (Marquise, 10.52×5.26mm, Green)
Quick summary: When looked from above (face-up position), 1ct Diopside (10.52×5.26mm, marquise cut) appears 8% larger than 1ct Tourmaline (7.65×7.65mm, trillion cut). See below how they compare side-by-side on a ring and finger.
| 1ct Tourmaline (trillion cut) |
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1ct Diopside (marquise cut) |
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violet |
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| 7.65×7.65 mm | 10.52×5.26 mm | |
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Actual sizes of
1ct Tourmaline Trillion (7.65×7.65mm, Violet)
and
1ct Diopside Marquise (10.52×5.26mm, 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, Diopside will face-up smaller than Tourmaline for a given
carat weight, because it has higher specific gravity
(3.3 vs. 3.1 - this means it's "heavier" compared to Tourmaline 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.
| 1 Ct Tourmaline (Trillion) | 1 Ct Diopside (Marquise) | |
| 7.65×7.65 mm | vs | 10.52×5.26 mm |
| 36.28 mm² | 39.29 mm² |
| 1ct Tourmaline Trillion (7.65×7.65mm) | |
| 1ct Diopside Marquise (10.52×5.26mm) | |
| Difference: 8% (3.01 mm²) |
1ct Diopside Marquise (10.52×5.26mm) has approx. 8% more face-up area than 1ct Tourmaline Trillion (7.65×7.65mm).
Popular comparisons:
- 1ct Tourmaline (Trillion, Violet, 7.65 x 7.65) vs. 2.7ct Morganite (Trillion, Light Purple, 11.16 x 11.16)
- 1ct Tourmaline (Trillion, Violet, 7.65 x 7.65) vs. 1ct Morganite (Marquise, Light Purple, 11.26 x 5.63)
- 4.93ct Tourmaline (Trillion, Red, 13.02 x 13.02) vs. 5.66ct Tourmaline (Trillion, Green, 13.64 x 13.64)
- 2ct Tourmaline (Trillion, Violet, 9.64 x 9.64) vs. 6.5ct Tourmaline (Emerald, Violet, 12.97 x 9.61)
- 2.5ct Tourmaline (Trillion, Light Red, 10.39 x 10.39) vs. 1ct Sapphire (Princess, Blue, 5.37 x 5.37)
- 2ct Tourmaline (Trillion, Violet, 8.8 x 8.6) vs. 2ct Tourmaline (Trillion, Violet, 9 x 9)
- 2.7ct Tourmaline (Trillion, Violet, 10.66 x 10.66) vs. 3ct Ruby (Emerald, Red, 9 x 7)
- 1ct Tourmaline (Trillion, Red, 7.65 x 7.65) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
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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.