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20ct Morganite (Round, 18.28×18.28mm, Light Purple) vs 20ct Quartz (Round, 18.62×18.62mm, Brown)


Quick summary: When looked from above (face-up position), 20ct Quartz (18.62×18.62mm, round cut) appears 4% larger than 20ct Morganite (18.28×18.28mm, round cut). See below how they compare side-by-side on a ring and finger.

20ct Morganite (round cut)
vs
 20ct Quartz (round cut)
light purple
 
brown
18.28×18.28 mm 18.62×18.62 mm
actual size
Actual size of 20ct Morganite (round cut, 18.28×18.28mm, Light Purple color)   Actual size of 20ct Quartz (round cut, 18.62×18.62mm, 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 20ct Morganite (round cut, 18.28×18.28mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Brown 20ct Quartz (round cut, 18.62×18.62mm) 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
 109% vs 111%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 20ct Morganite Round (18.28×18.28mm, Light Purple) and 20ct Quartz Round (18.62×18.62mm, 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.


20 Ct Morganite (Round) 20 Ct Quartz (Round)
18.28×18.28 mm vs 18.62×18.62 mm
262.45 mm²   272.3 mm²
Face-up size outline for 20ct Quartz (18.62×18.62mm, round cut)
Face-up size outline for 20ct Morganite (18.28×18.28mm, round cut)
20ct Morganite Round (18.28×18.28mm)
20ct Quartz Round (18.62×18.62mm)
Difference: 4% (9.85 mm²)
20ct Quartz (Round, 18.62×18.62mm) has approx. 4% more face-up area than 20ct Morganite (Round, 18.28×18.28mm).


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