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3ct Chrysoberyl (Trillion, 10.4×10.4mm, Light Yellowish Green) vs 4ct Tourmaline (Marquise, 17.06×8.53mm, Violet)


Quick summary: When looked from above (face-up position), 4ct Tourmaline (17.06×8.53mm, marquise cut) appears 54% larger than 3ct Chrysoberyl (10.4×10.4mm, trillion cut). See below how they compare side-by-side on a ring and finger.

3ct Chrysoberyl (trillion cut)
vs
4ct Tourmaline (marquise cut)
light yellowish green
 
violet
10.4×10.4 mm 17.06×8.53 mm
actual size
Actual size of 3ct Chrysoberyl (trillion cut, 10.4×10.4mm, Light Yellowish Green color)   Actual size of 4ct Tourmaline (marquise cut, 17.06×8.53mm, Violet color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Yellowish Green 3ct Chrysoberyl (trillion cut, 10.4×10.4mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Violet 4ct Tourmaline (marquise cut, 17.06×8.53mm) 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
62% vs 51%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 3ct Chrysoberyl Trillion (10.4×10.4mm, Light Yellowish Green) and 4ct Tourmaline Marquise (17.06×8.53mm, Violet) 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, Chrysoberyl will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.73 vs. 3.06 - this means it's "heavier" compared to Tourmaline 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.


3 Ct Chrysoberyl (Trillion) 4 Ct Tourmaline (Marquise)
10.4×10.4 mm vs 17.06×8.53 mm
67.06 mm²   103.32 mm²
Face-up size outline for 4ct Tourmaline (17.06×8.53mm, marquise cut)
Face-up size outline for 3ct Chrysoberyl (10.4×10.4mm, trillion cut)
3ct Chrysoberyl Trillion (10.4×10.4mm)
4ct Tourmaline Marquise (17.06×8.53mm)
Difference: 54% (36.26 mm²)
4ct Tourmaline (Marquise, 17.06×8.53mm) has approx. 54% more face-up area than 3ct Chrysoberyl (Trillion, 10.4×10.4mm).


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