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6.5ct Sapphire (Emerald, 11.92×8.83mm, Blue) vs 6.5ct Tourmaline (Emerald, 12.97×9.61mm, Violet)


Quick summary: When looked from above (face-up position), 6.5ct Tourmaline (12.97×9.61mm, emerald cut) appears 18% larger than 6.5ct Sapphire (11.92×8.83mm, emerald cut). See below how they compare side-by-side on a ring and finger.

6.5ct Sapphire (emerald cut)
vs
 6.5ct Tourmaline (emerald cut)
blue
 
violet
11.92×8.83 mm 12.97×9.61 mm
actual size
Actual size of 6.5ct Sapphire (emerald cut, 11.92×8.83mm, Blue color)   Actual size of 6.5ct Tourmaline (emerald cut, 12.97×9.61mm, Violet color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 6.5ct Sapphire (emerald cut, 11.92×8.83mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Violet 6.5ct Tourmaline (emerald cut, 12.97×9.61mm) 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
 53% vs 57%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 6.5ct Sapphire Emerald (11.92×8.83mm, Blue) and 6.5ct Tourmaline Emerald (12.97×9.61mm, Violet) 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.


6.5 Ct Sapphire (Emerald) 6.5 Ct Tourmaline (Emerald)
11.92×8.83 mm vs 12.97×9.61 mm
97.89 mm²   115.92 mm²
Face-up size outline for 6.5ct Tourmaline (12.97×9.61mm, emerald cut)
Face-up size outline for 6.5ct Sapphire (11.92×8.83mm, emerald cut)
6.5ct Sapphire Emerald (11.92×8.83mm)
6.5ct Tourmaline Emerald (12.97×9.61mm)
Difference: 18% (18.03 mm²)
6.5ct Tourmaline (Emerald, 12.97×9.61mm) has approx. 18% more face-up area than 6.5ct Sapphire (Emerald, 11.92×8.83mm).


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