×
carat vs. color  length*  width*
  ×

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

7ct Amethyst (Round, 13.12×13.12mm, Violet) vs 7ct Zircon (Round, 10.88×10.88mm, Bluish Green)


Quick summary: When looked from above (face-up position), 7ct Amethyst (13.12×13.12mm, round cut) appears 45% larger than 7ct Zircon (10.88×10.88mm, round cut). See below how they compare side-by-side on a ring and finger.

7ct Amethyst (round cut)
vs
 7ct Zircon (round cut)
violet
 
bluish green
13.12×13.12 mm 10.88×10.88 mm
actual size
Actual size of 7ct Amethyst (round cut, 13.12×13.12mm, Violet color)   Actual size of 7ct Zircon (round cut, 10.88×10.88mm, Bluish Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 7ct Amethyst (round cut, 13.12×13.12mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Bluish Green 7ct Zircon (round cut, 10.88×10.88mm) 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
 78% vs 65%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 7ct Amethyst Round (13.12×13.12mm, Violet) and 7ct Zircon Round (10.88×10.88mm, Bluish 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, Zircon will face-up smaller than Amethyst for a given carat weight, because it has higher specific gravity (4.7 vs. 2.65 - this means it's "heavier" compared to Amethyst 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.


7 Ct Amethyst (Round) 7 Ct Zircon (Round)
13.12×13.12 mm vs 10.88×10.88 mm
135.19 mm²   92.97 mm²
Face-up size outline for 7ct Amethyst (13.12×13.12mm, round cut)
Face-up size outline for 7ct Zircon (10.88×10.88mm, round cut)
7ct Amethyst Round (13.12×13.12mm)
7ct Zircon Round (10.88×10.88mm)
Difference: 45% (42.22 mm²)
7ct Amethyst (Round, 13.12×13.12mm) has approx. 45% more face-up area than 7ct Zircon (Round, 10.88×10.88mm).


Popular comparisons: