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8.23ct Amethyst (Oval, 15.9×12.7mm, Light Violet) vs 2.1ct Sapphire (Oval, 8.92×6.51mm, Blue)


Quick summary: When looked from above (face-up position), 8.23ct Amethyst (15.9×12.7mm, oval cut) appears 3.5 times larger than 2.1ct Sapphire (8.92×6.51mm, oval cut). See below how they compare side-by-side on a ring and finger.

8.23ct Amethyst (oval cut)
vs
 2.1ct Sapphire (oval cut)
light violet
 
blue
15.9×12.7 mm 8.92×6.51 mm
actual size
Actual size of 8.23ct Amethyst (oval cut, 15.9×12.7mm, Light Violet color)   Actual size of 2.1ct Sapphire (oval cut, 8.92×6.51mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Violet 8.23ct Amethyst (oval cut, 15.9×12.7mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 2.1ct Sapphire (oval cut, 8.92×6.51mm) 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
 76% vs 39%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 8.23ct Amethyst Oval (15.9×12.7mm, Light Violet) and 2.1ct Sapphire Oval (8.92×6.51mm, 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, Sapphire will face-up smaller than Amethyst for a given carat weight, because it has higher specific gravity (4 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.


8.23 Ct Amethyst (Oval) 2.1 Ct Sapphire (Oval)
15.9×12.7 mm vs 8.92×6.51 mm
165.58 mm²   47.62 mm²
Face-up size outline for 8.23ct Amethyst (15.9×12.7mm, oval cut)
Face-up size outline for 2.1ct Sapphire (8.92×6.51mm, oval cut)
8.23ct Amethyst Oval (15.9×12.7mm)
2.1ct Sapphire Oval (8.92×6.51mm)
Difference: 248% (117.96 mm²)
8.23ct Amethyst (Oval, 15.9×12.7mm) has approx. 248% more face-up area than 2.1ct Sapphire (Oval, 8.92×6.51mm). In other words, it's 3.48x larger.


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