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carat vs. color  length*  width*
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1.5 Ct Tourmaline (Round)

vs

1.5 Ct Sapphire (Emerald)

light red
 
white
7.45×7.45 mm 7.3×5.41 mm
actual size
Actual size of 1.5ct Tourmaline   Actual size of 1.5ct Sapphire
 
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Ring: Skin tone:
Ring width: 3.0 mm
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Left finger image
Ring on left finger
Light Red 1.5ct Tourmaline on a ring
64 mm
Right finger image
Ring on a right finger
White 1.5ct Sapphire on a ring
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 1.5ct Tourmaline Round (7.45×7.45mm, Light Red) and 1.5ct Sapphire Emerald (7.3×5.41mm, White) 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?

JamesAllen → high-quality Sapphires, high-end jewelry and competitive prices. Highly recommended.
Amazon → usually offers a good selection from many different vendors. Worth a check.

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. 3.1 - 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.


1.5 Ct Tourmaline (Round) 1.5 Ct Sapphire (Emerald)
7.45×7.45 mm vs 7.3×5.41 mm
43.59 mm²   36.73 mm²
Face-up size outline
Face-up size outline
1.5ct Tourmaline Round (7.45×7.45mm)
1.5ct Sapphire Emerald (7.3×5.41mm)
Difference: 19% (6.86 mm²)
1.5ct Tourmaline Round (7.45×7.45mm) has approx. 19% more face-up area than 1.5ct Sapphire Emerald (7.3×5.41mm).


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