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40ct Morganite (Marquise, 37.44×18.72mm, Light Purple) vs 40ct Quartz (Marquise, 38.14×19.07mm, Brown)


Quick summary: When looked from above (face-up position), 40ct Quartz (38.14×19.07mm, marquise cut) appears 4% larger than 40ct Morganite (37.44×18.72mm, marquise cut). See below how they compare side-by-side on a ring and finger.

40ct Morganite (marquise cut)
vs
 40ct Quartz (marquise cut)
light purple
 
brown
37.44×18.72 mm 38.14×19.07 mm
actual size
Actual size of 40ct Morganite (marquise cut, 37.44×18.72mm, Light Purple color)   Actual size of 40ct Quartz (marquise cut, 38.14×19.07mm, 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 (marquise cut, 37.44×18.72mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Brown 40ct Quartz (marquise cut, 38.14×19.07mm) 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
 111% vs 113%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 40ct Morganite Marquise (37.44×18.72mm, Light Purple) and 40ct Quartz Marquise (38.14×19.07mm, 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 (Marquise) 40 Ct Quartz (Marquise)
37.44×18.72 mm vs 38.14×19.07 mm
497.62 mm²   516.4 mm²
Face-up size outline for 40ct Quartz (38.14×19.07mm, marquise cut)
Face-up size outline for 40ct Morganite (37.44×18.72mm, marquise cut)
40ct Morganite Marquise (37.44×18.72mm)
40ct Quartz Marquise (38.14×19.07mm)
Difference: 4% (18.78 mm²)
40ct Quartz (Marquise, 38.14×19.07mm) has approx. 4% more face-up area than 40ct Morganite (Marquise, 37.44×18.72mm).


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