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30ct Quartz (Cabochon, 24.39×16.26mm, Brown) vs 30ct Andesine (Cabochon, 24.33×16.22mm, Orange)


Quick summary: When looked from above (face-up position), 30ct Quartz (24.39×16.26mm, cabochon cut) appears 0.5% larger than 30ct Andesine (24.33×16.22mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

30ct Quartz (cabochon cut)
vs
 30ct Andesine (cabochon cut)
brown
 
orange
24.39×16.26 mm 24.33×16.22 mm
actual size
Actual size of 30ct Quartz (cabochon cut, 24.39×16.26mm, Brown color)   Actual size of 30ct Andesine (cabochon cut, 24.33×16.22mm, Orange color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Brown 30ct Quartz (cabochon cut, 24.39×16.26mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Orange 30ct Andesine (cabochon cut, 24.33×16.22mm) 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
 97% vs 96%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 30ct Quartz Cabochon (24.39×16.26mm, Brown) and 30ct Andesine Cabochon (24.33×16.22mm, Orange) 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, Andesine will face-up slightly smaller than Quartz for a given carat weight, because it has higher specific gravity (2.67 vs. 2.65 - this means it's "slightly 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.


30 Ct Quartz (Cabochon) 30 Ct Andesine (Cabochon)
24.39×16.26 mm vs 24.33×16.22 mm
325.2 mm²   323.6 mm²
Face-up size outline for 30ct Quartz (24.39×16.26mm, cabochon cut)
Face-up size outline for 30ct Andesine (24.33×16.22mm, cabochon cut)
30ct Quartz Cabochon (24.39×16.26mm)
30ct Andesine Cabochon (24.33×16.22mm)
Difference: 0.5% (1.6 mm²)
30ct Quartz (Cabochon, 24.39×16.26mm) has approx. 0.5% more face-up area than 30ct Andesine (Cabochon, 24.33×16.22mm).


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