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0.3ct Sapphire (Oval, 5.07×3.38mm, Blue) vs 1ct Diopside (Oval, 8.07×5.38mm, Green)


Quick summary: When looked from above (face-up position), 1ct Diopside (8.07×5.38mm, oval cut) appears 2.5 times larger than 0.3ct Sapphire (5.07×3.38mm, oval cut). See below how they compare side-by-side on a ring and finger.

0.3ct Sapphire (oval cut)
vs
 1ct Diopside (oval cut)
blue
 
green
5.07×3.38 mm 8.07×5.38 mm
actual size
Actual size of 0.3ct Sapphire (oval cut, 5.07×3.38mm, Blue color)   Actual size of 1ct Diopside (oval cut, 8.07×5.38mm, Green color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.3ct Sapphire (oval cut, 5.07×3.38mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Green 1ct Diopside (oval cut, 8.07×5.38mm) 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
 20% vs 32%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.3ct Sapphire Oval (5.07×3.38mm, Blue) and 1ct Diopside Oval (8.07×5.38mm, 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 Diopside for a given carat weight, because it has higher specific gravity (4 vs. 3.3 - this means it's "heavier" compared to Diopside 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.


0.3 Ct Sapphire (Oval) 1 Ct Diopside (Oval)
5.07×3.38 mm vs 8.07×5.38 mm
14.05 mm²   35.6 mm²
Face-up size outline for 1ct Diopside (8.07×5.38mm, oval cut)
Face-up size outline for 0.3ct Sapphire (5.07×3.38mm, oval cut)
0.3ct Sapphire Oval (5.07×3.38mm)
1ct Diopside Oval (8.07×5.38mm)
Difference: 153% (21.55 mm²)
1ct Diopside (Oval, 8.07×5.38mm) has approx. 153% more face-up area than 0.3ct Sapphire (Oval, 5.07×3.38mm). In other words, it's 2.53x larger.


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