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3ct Sapphire (Emerald, 9.21×6.82mm, Dark Bluish Green) vs 3ct Tourmaline (Emerald, 10.03×7.43mm, Light Red)


Quick summary: When looked from above (face-up position), 3ct Tourmaline (10.03×7.43mm, emerald cut) appears 19% larger than 3ct Sapphire (9.21×6.82mm, emerald cut). See below how they compare side-by-side on a ring and finger.

3ct Sapphire (emerald cut)
vs
3ct Tourmaline (emerald cut)
dark bluish green
 
light red
9.21×6.82 mm 10.03×7.43 mm
actual size
Actual size of 3ct Sapphire (emerald cut, 9.21×6.82mm, Dark Bluish Green color)   Actual size of 3ct Tourmaline (emerald cut, 10.03×7.43mm, Light Red color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Dark Bluish Green 3ct Sapphire (emerald cut, 9.21×6.82mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Red 3ct Tourmaline (emerald cut, 10.03×7.43mm) 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
41% vs 44%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Sapphire Emerald (9.21×6.82mm, Dark Bluish Green) and 3ct Tourmaline Emerald (10.03×7.43mm, Light Red) 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, Sapphire will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (4 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 Sapphire (Emerald) 3 Ct Tourmaline (Emerald)
9.21×6.82 mm vs 10.03×7.43 mm
58.42 mm²   69.31 mm²
Face-up size outline for 3ct Tourmaline (10.03×7.43mm, emerald cut)
Face-up size outline for 3ct Sapphire (9.21×6.82mm, emerald cut)
3ct Sapphire Emerald (9.21×6.82mm)
3ct Tourmaline Emerald (10.03×7.43mm)
Difference: 19% (10.89 mm²)
3ct Tourmaline (Emerald, 10.03×7.43mm) has approx. 19% more face-up area than 3ct Sapphire (Emerald, 9.21×6.82mm).


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