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0.5ct Sapphire (Round, 4.75×4.75mm, Dark Purple) vs 2ct Emerald (Round, 8.59×8.59mm, Green)


Quick summary: When looked from above (face-up position), 2ct Emerald (8.59×8.59mm, round cut) appears 3.3 times larger than 0.5ct Sapphire (4.75×4.75mm, round cut). See below how they compare side-by-side on a ring and finger.

0.5ct Sapphire (round cut)
vs
 2ct Emerald (round cut)
dark purple
 
green
4.75×4.75 mm 8.59×8.59 mm
actual size
Actual size of 0.5ct Sapphire (round cut, 4.75×4.75mm, Dark Purple color)   Actual size of 2ct Emerald (round cut, 8.59×8.59mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Dark Purple 0.5ct Sapphire (round cut, 4.75×4.75mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 2ct Emerald (round cut, 8.59×8.59mm) 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
 29% vs 51%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 0.5ct Sapphire Round (4.75×4.75mm, Dark Purple) and 2ct Emerald Round (8.59×8.59mm, 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, Sapphire will face-up smaller than Emerald for a given carat weight, because it has higher specific gravity (4 vs. 2.72 - this means it's "heavier" compared to Emerald 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.


0.5 Ct Sapphire (Round) 2 Ct Emerald (Round)
4.75×4.75 mm vs 8.59×8.59 mm
17.72 mm²   57.95 mm²
Face-up size outline for 2ct Emerald (8.59×8.59mm, round cut)
Face-up size outline for 0.5ct Sapphire (4.75×4.75mm, round cut)
0.5ct Sapphire Round (4.75×4.75mm)
2ct Emerald Round (8.59×8.59mm)
Difference: 227% (40.23 mm²)
2ct Emerald (Round, 8.59×8.59mm) has approx. 227% more face-up area than 0.5ct Sapphire (Round, 4.75×4.75mm). In other words, it's 3.27x larger.


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