×
carat vs. color  length*  width*
  ×

(or examine a single gem)
* size in mm (optional)

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 Change
Settings
Ring: Skin tone:
Ring width: 3.0 mm
Saved...
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
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 (3.7 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.


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).


Popular comparisons:

Enter your screen size (diagonal)

My screen size is  inches



Actual size is currently adjusted to screen.

If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.