×
carat vs. color  length*  width*
  ×

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

12ct Hiddenite (Cabochon, 16.92×11.28mm, Light Green ) vs 12ct Diopside (Cabochon, 16.71×11.14mm, Green)


Quick summary: When looked from above (face-up position), 12ct Hiddenite (16.92×11.28mm, cabochon cut) appears 3% larger than 12ct Diopside (16.71×11.14mm, cabochon cut). See below how they compare side-by-side on a ring and finger.

12ct Hiddenite (cabochon cut)
vs
 12ct Diopside (cabochon cut)
light green
 
green
16.92×11.28 mm 16.71×11.14 mm
actual size
Actual size of 12ct Hiddenite (cabochon cut, 16.92×11.28mm, Light Green color)   Actual size of 12ct Diopside (cabochon cut, 16.71×11.14mm, Green color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Green 12ct Hiddenite (cabochon cut, 16.92×11.28mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 12ct Diopside (cabochon cut, 16.71×11.14mm) 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
 67% vs 66%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 12ct Hiddenite Cabochon (16.92×11.28mm, Light Green ) and 12ct Diopside Cabochon (16.71×11.14mm, Green) 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 Hiddenite for a given carat weight, because it has higher specific gravity (3.3 vs. 3.18 - this means it's "heavier" compared to Hiddenite 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.


12 Ct Hiddenite (Cabochon) 12 Ct Diopside (Cabochon)
16.92×11.28 mm vs 16.71×11.14 mm
156.5 mm²   152.64 mm²
Face-up size outline for 12ct Hiddenite (16.92×11.28mm, cabochon cut)
Face-up size outline for 12ct Diopside (16.71×11.14mm, cabochon cut)
12ct Hiddenite Cabochon (16.92×11.28mm)
12ct Diopside Cabochon (16.71×11.14mm)
Difference: 3% (3.86 mm²)
12ct Hiddenite (Cabochon, 16.92×11.28mm) has approx. 3% more face-up area than 12ct Diopside (Cabochon, 16.71×11.14mm).


Popular comparisons: