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0.25ct Amethyst (Cabochon, 4.95×3.3mm, Violet) vs 0.25ct Quartz (Cabochon, 4.95×3.3mm, Brown)


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

0.25ct Amethyst (cabochon cut)
vs
 0.25ct Quartz (cabochon cut)
violet
 
brown
4.95×3.3 mm 4.95×3.3 mm
actual size
Actual size of 0.25ct Amethyst (cabochon cut, 4.95×3.3mm, Violet color)   Actual size of 0.25ct Quartz (cabochon cut, 4.95×3.3mm, 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 (cabochon cut, 4.95×3.3mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Brown 0.25ct Quartz (cabochon cut, 4.95×3.3mm) 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
 20% vs 20%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.25ct Amethyst Cabochon (4.95×3.3mm, Violet) and 0.25ct Quartz Cabochon (4.95×3.3mm, 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 (Cabochon) 0.25 Ct Quartz (Cabochon)
4.95×3.3 mm vs 4.95×3.3 mm
13.39 mm²   13.39 mm²
Face-up size outline for true size of 4.95×3.3mm
0.25ct Amethyst Cabochon (4.95×3.3mm)
0.25ct Quartz Cabochon (4.95×3.3mm)
Difference: 0% (0 mm²)
0.25ct Amethyst (Cabochon, 4.95×3.3mm) and 0.25ct Quartz (Cabochon, 4.95×3.3mm) have the same face-up area.


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