×
carat vs. color  length*  width*
  ×

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

0.25ct Amethyst (Heart, 4.52×4.52mm, Violet) vs 0.25ct Quartz (Heart, 4.52×4.52mm, Brown)


Quick summary: Compared gemstones have equal face-up area.

0.25ct Amethyst (heart cut)
vs
 0.25ct Quartz (heart cut)
violet
 
brown
4.52×4.52 mm 4.52×4.52 mm
actual size
Actual size of 0.25ct Amethyst (heart cut, 4.52×4.52mm, Violet color)   Actual size of 0.25ct Quartz (heart cut, 4.52×4.52mm, Brown color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 0.25ct Amethyst (heart cut, 4.52×4.52mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Brown 0.25ct Quartz (heart cut, 4.52×4.52mm) 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
 27% vs 27%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.25ct Amethyst Heart (4.52×4.52mm, Violet) and 0.25ct Quartz Heart (4.52×4.52mm, Brown) 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

Amethyst and Quartz have the same specific gravity so their face-up size depends on the weight, shape and 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.


0.25 Ct Amethyst (Heart) 0.25 Ct Quartz (Heart)
4.52×4.52 mm vs 4.52×4.52 mm
14.71 mm²   14.71 mm²
Face-up size outline for true size of 4.52×4.52mm
0.25ct Amethyst Heart (4.52×4.52mm)
0.25ct Quartz Heart (4.52×4.52mm)
Difference: 0% (0 mm²)
0.25ct Amethyst (Heart, 4.52×4.52mm) and 0.25ct Quartz (Heart, 4.52×4.52mm) have the same face-up area.


Popular comparisons: