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0.5ct Alexandrite (Emerald, 5.2×3.85mm, Dark Violet) vs 0.5ct Tourmaline (Cushion, 4.83×4.83mm, Light Green )


Quick summary: When looked from above (face-up position), 0.5ct Tourmaline (4.83×4.83mm, cushion cut) appears 13% larger than 0.5ct Alexandrite (5.2×3.85mm, emerald cut). See below how they compare side-by-side on a ring and finger.

0.5ct Alexandrite (emerald cut)
vs
 0.5ct Tourmaline (cushion cut)
dark violet
 
light green
5.2×3.85 mm 4.83×4.83 mm
actual size
Actual size of 0.5ct Alexandrite (emerald cut, 5.2×3.85mm, Dark Violet color)   Actual size of 0.5ct Tourmaline (cushion cut, 4.83×4.83mm, Light Green color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Dark Violet 0.5ct Alexandrite (emerald cut, 5.2×3.85mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Green 0.5ct Tourmaline (cushion cut, 4.83×4.83mm) 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
 23% vs 29%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.5ct Alexandrite Emerald (5.2×3.85mm, Dark Violet) and 0.5ct Tourmaline Cushion (4.83×4.83mm, Light 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, Alexandrite will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.73 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.


0.5 Ct Alexandrite (Emerald) 0.5 Ct Tourmaline (Cushion)
5.2×3.85 mm vs 4.83×4.83 mm
18.62 mm²   21 mm²
Face-up size outline for 0.5ct Tourmaline (4.83×4.83mm, cushion cut)
Face-up size outline for 0.5ct Alexandrite (5.2×3.85mm, emerald cut)
0.5ct Alexandrite Emerald (5.2×3.85mm)
0.5ct Tourmaline Cushion (4.83×4.83mm)
Difference: 13% (2.38 mm²)
0.5ct Tourmaline (Cushion, 4.83×4.83mm) has approx. 13% more face-up area than 0.5ct Alexandrite (Emerald, 5.2×3.85mm).


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