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1ct Topaz (Emerald, 6.66×4.93mm, Blue) vs 1ct Tourmaline (Emerald, 6.66×4.93mm, Light Bluish Green)


Quick summary: Compared gemstones have equal face-up area.

1ct Topaz (emerald cut)
vs
1ct Tourmaline (emerald cut)
blue
 
light bluish green
6.66×4.93 mm 6.66×4.93 mm
actual size
Actual size of 1ct Topaz (emerald cut, 6.66×4.93mm, Blue color)   Actual size of 1ct Tourmaline (emerald cut, 6.66×4.93mm, Light Bluish Green color)
 
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Ring: Skin tone:
Ring width: 3.0 mm
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Left finger image
Ring on left finger
Blue 1ct Topaz (emerald cut, 6.66×4.93mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Bluish Green 1ct Tourmaline (emerald cut, 6.66×4.93mm) 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
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Ring diameter: 16.9 mm
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Actual sizes of 1ct Topaz Emerald (6.66×4.93mm, Blue) and 1ct Tourmaline Emerald (6.66×4.93mm, Light Bluish 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, Topaz will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.53 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.


1 Ct Topaz (Emerald) 1 Ct Tourmaline (Emerald)
6.66×4.93 mm vs 6.66×4.93 mm
30.54 mm²   30.54 mm²
Face-up size outline for true size of 6.66×4.93mm
1ct Topaz Emerald (6.66×4.93mm)
1ct Tourmaline Emerald (6.66×4.93mm)
Difference: 0% (0 mm²)
1ct Topaz Emerald (6.66×4.93mm) and 1ct Tourmaline Emerald (6.66×4.93mm) have the same face-up area.


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