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3ct Tourmaline (Pear, 13.05×7.86mm, Violet) vs 3ct Topaz (Pear, 12.48×7.52mm, Blue)


Quick summary: When looked from above (face-up position), 3ct Tourmaline (13.05×7.86mm, pear cut) appears 9% larger than 3ct Topaz (12.48×7.52mm, pear cut). See below how they compare side-by-side on a ring and finger.

3ct Tourmaline (pear cut)
vs
 3ct Topaz (pear cut)
violet
 
blue
13.05×7.86 mm 12.48×7.52 mm
actual size
Actual size of 3ct Tourmaline (pear cut, 13.05×7.86mm, Violet color)   Actual size of 3ct Topaz (pear cut, 12.48×7.52mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 3ct Tourmaline (pear cut, 13.05×7.86mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 3ct Topaz (pear cut, 12.48×7.52mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 47% vs 45%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Tourmaline Pear (13.05×7.86mm, Violet) and 3ct Topaz Pear (12.48×7.52mm, 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, Topaz will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.53 vs. 3.06 - 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.


3 Ct Tourmaline (Pear) 3 Ct Topaz (Pear)
13.05×7.86 mm vs 12.48×7.52 mm
74.88 mm²   68.51 mm²
Face-up size outline for 3ct Tourmaline (13.05×7.86mm, pear cut)
Face-up size outline for 3ct Topaz (12.48×7.52mm, pear cut)
3ct Tourmaline Pear (13.05×7.86mm)
3ct Topaz Pear (12.48×7.52mm)
Difference: 9% (6.37 mm²)
3ct Tourmaline (Pear, 13.05×7.86mm) has approx. 9% more face-up area than 3ct Topaz (Pear, 12.48×7.52mm).


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