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0.5ct Sapphire (Round, 4.75×4.75mm, Dark Purple) vs 2ct Diamond (Baguette, 9.11×6.07mm, White)


Quick summary: When looked from above (face-up position), 2ct Diamond (9.11×6.07mm, baguette cut) appears 3.1 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 Diamond (baguette cut)
dark purple
 
white
4.75×4.75 mm 9.11×6.07 mm
actual size
Actual size of 0.5ct Sapphire (round cut, 4.75×4.75mm, Dark Purple color)   Actual size of 2ct Diamond (baguette cut, 9.11×6.07mm, White 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
White 2ct Diamond (baguette cut, 9.11×6.07mm) 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 36%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.5ct Sapphire Round (4.75×4.75mm, Dark Purple) and 2ct Diamond Baguette (9.11×6.07mm, White) 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 Diamond for a given carat weight, because it has higher specific gravity (4 vs. 3.52 - this means it's "heavier" compared to Diamond 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 Diamond (Baguette)
4.75×4.75 mm vs 9.11×6.07 mm
17.72 mm²   55.3 mm²
Face-up size outline for 2ct Diamond (9.11×6.07mm, baguette cut)
Face-up size outline for 0.5ct Sapphire (4.75×4.75mm, round cut)
0.5ct Sapphire Round (4.75×4.75mm)
2ct Diamond Baguette (9.11×6.07mm)
Difference: 212% (37.58 mm²)
2ct Diamond (Baguette, 9.11×6.07mm) has approx. 212% more face-up area than 0.5ct Sapphire (Round, 4.75×4.75mm). In other words, it's 3.12x larger.


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