×
carat vs. color  length*  width*
  ×

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

2ct Amethyst (Pear, 12×7.23mm, Violet) vs 3ct Topaz (Pear, 12.48×7.52mm, Light Blue)


Quick summary: When looked from above (face-up position), 3ct Topaz (12.48×7.52mm, pear cut) appears 8% larger than 2ct Amethyst (12×7.23mm, pear cut). See below how they compare side-by-side on a ring and finger.

2ct Amethyst (pear cut)
vs
 3ct Topaz (pear cut)
violet
 
light blue
12×7.23 mm 12.48×7.52 mm
actual size
Actual size of 2ct Amethyst (pear cut, 12×7.23mm, Violet color)   Actual size of 3ct Topaz (pear cut, 12.48×7.52mm, Light Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Violet 2ct Amethyst (pear cut, 12×7.23mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Light Blue 3ct Topaz (pear cut, 12.48×7.52mm) 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
 43% vs 45%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2ct Amethyst Pear (12×7.23mm, Violet) and 3ct Topaz Pear (12.48×7.52mm, Light Blue) 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, Topaz will face-up smaller than Amethyst for a given carat weight, because it has higher specific gravity (3.53 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.


2 Ct Amethyst (Pear) 3 Ct Topaz (Pear)
12×7.23 mm vs 12.48×7.52 mm
63.33 mm²   68.51 mm²
Face-up size outline for 3ct Topaz (12.48×7.52mm, pear cut)
Face-up size outline for 2ct Amethyst (12×7.23mm, pear cut)
2ct Amethyst Pear (12×7.23mm)
3ct Topaz Pear (12.48×7.52mm)
Difference: 8% (5.18 mm²)
3ct Topaz (Pear, 12.48×7.52mm) has approx. 8% more face-up area than 2ct Amethyst (Pear, 12×7.23mm).


Popular comparisons: