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1.7ct Emerald (Trillion, 9.56×9.56mm, Green) vs 0.9ct Sapphire (Round, 5.77×5.77mm, Blue)


Quick summary: When looked from above (face-up position), 1.7ct Emerald (9.56×9.56mm, trillion cut) appears 2.2 times larger than 0.9ct Sapphire (5.77×5.77mm, round cut). See below how they compare side-by-side on a ring and finger.

1.7ct Emerald (trillion cut)
vs
 0.9ct Sapphire (round cut)
green
 
blue
9.56×9.56 mm 5.77×5.77 mm
actual size
Actual size of 1.7ct Emerald (trillion cut, 9.56×9.56mm, Green color)   Actual size of 0.9ct Sapphire (round cut, 5.77×5.77mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 1.7ct Emerald (trillion cut, 9.56×9.56mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 0.9ct Sapphire (round cut, 5.77×5.77mm) 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
 57% vs 35%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.7ct Emerald Trillion (9.56×9.56mm, Green) and 0.9ct Sapphire Round (5.77×5.77mm, 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 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.


1.7 Ct Emerald (Trillion) 0.9 Ct Sapphire (Round)
9.56×9.56 mm vs 5.77×5.77 mm
56.66 mm²   26.15 mm²
Face-up size outline for 1.7ct Emerald (9.56×9.56mm, trillion cut)
Face-up size outline for 0.9ct Sapphire (5.77×5.77mm, round cut)
1.7ct Emerald Trillion (9.56×9.56mm)
0.9ct Sapphire Round (5.77×5.77mm)
Difference: 117% (30.51 mm²)
1.7ct Emerald (Trillion, 9.56×9.56mm) has approx. 117% more face-up area than 0.9ct Sapphire (Round, 5.77×5.77mm). In other words, it's 2.17x larger.


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