×
carat vs. color  length*  width*
  ×

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

40ct Morganite (Cabochon, 26.36×17.57mm, Light Purple) vs 40ct Quartz (Cabochon, 26.85×17.9mm, Brown)


Quick summary: When looked from above (face-up position), 40ct Quartz (26.85×17.9mm, cabochon cut) appears 4% larger than 40ct Morganite (26.36×17.57mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

40ct Morganite (cabochon cut)
vs
40ct Quartz (cabochon cut)
light purple
 
brown
26.36×17.57 mm 26.85×17.9 mm
actual size
Actual size of 40ct Morganite (cabochon cut, 26.36×17.57mm, Light Purple color)   Actual size of 40ct Quartz (cabochon cut, 26.85×17.9mm, Brown color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Purple 40ct Morganite (cabochon cut, 26.36×17.57mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Brown 40ct Quartz (cabochon cut, 26.85×17.9mm) 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
104% vs 106%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 40ct Morganite Cabochon (26.36×17.57mm, Light Purple) and 40ct Quartz Cabochon (26.85×17.9mm, 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

All things being equal, Morganite will face-up smaller than Quartz for a given carat weight, because it has higher specific gravity (2.8 vs. 2.65 - this means it's "heavier" compared to Quartz 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.


40 Ct Morganite (Cabochon) 40 Ct Quartz (Cabochon)
26.36×17.57 mm vs 26.85×17.9 mm
379.78 mm²   394.1 mm²
Face-up size outline for 40ct Quartz (26.85×17.9mm, cabochon cut)
Face-up size outline for 40ct Morganite (26.36×17.57mm, cabochon cut)
40ct Morganite Cabochon (26.36×17.57mm)
40ct Quartz Cabochon (26.85×17.9mm)
Difference: 4% (14.32 mm²)
40ct Quartz (Cabochon, 26.85×17.9mm) has approx. 4% more face-up area than 40ct Morganite (Cabochon, 26.36×17.57mm).


Popular comparisons: