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3ct Diopside (Oval, 11.63×7.75mm, Green) vs 4ct Quartz (Oval, 13.77×9.18mm, White)


Quick summary: When looked from above (face-up position), 4ct Quartz (13.77×9.18mm, oval cut) appears 40% larger than 3ct Diopside (11.63×7.75mm, oval cut). See below how they compare side-by-side on a ring and finger.

3ct Diopside (oval cut)
vs
 4ct Quartz (oval cut)
green
 
white
11.63×7.75 mm 13.77×9.18 mm
actual size
Actual size of 3ct Diopside (oval cut, 11.63×7.75mm, Green color)   Actual size of 4ct Quartz (oval cut, 13.77×9.18mm, White color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 3ct Diopside (oval cut, 11.63×7.75mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 4ct Quartz (oval cut, 13.77×9.18mm) 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
 46% vs 55%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Diopside Oval (11.63×7.75mm, Green) and 4ct Quartz Oval (13.77×9.18mm, White) 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, Diopside will face-up smaller than Quartz for a given carat weight, because it has higher specific gravity (3.3 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.


3 Ct Diopside (Oval) 4 Ct Quartz (Oval)
11.63×7.75 mm vs 13.77×9.18 mm
73.91 mm²   103.66 mm²
Face-up size outline for 4ct Quartz (13.77×9.18mm, oval cut)
Face-up size outline for 3ct Diopside (11.63×7.75mm, oval cut)
3ct Diopside Oval (11.63×7.75mm)
4ct Quartz Oval (13.77×9.18mm)
Difference: 40% (29.75 mm²)
4ct Quartz (Oval, 13.77×9.18mm) has approx. 40% more face-up area than 3ct Diopside (Oval, 11.63×7.75mm).


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