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8.8ct Tourmaline (Oval, 15.22×11.45mm, Dark Yellowish Green) vs 7.65ct Diamond (Emerald, 14×9mm, White)


Quick summary: When looked from above (face-up position), 8.8ct Tourmaline (15.22×11.45mm, oval cut) appears 22% larger than 7.65ct Diamond (14×9mm, emerald cut). See below how they compare side-by-side on a ring and finger.

8.8ct Tourmaline (oval cut)
vs
7.65ct Diamond (emerald cut)
dark yellowish green
 
white
15.22×11.45 mm 14×9 mm
actual size
Actual size of 8.8ct Tourmaline (oval cut, 15.22×11.45mm, Dark Yellowish Green color)   Actual size of 7.65ct Diamond (emerald cut, 14×9mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Dark Yellowish Green 8.8ct Tourmaline (oval cut, 15.22×11.45mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 7.65ct Diamond (emerald cut, 14×9mm) 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
68% vs 54%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 8.8ct Tourmaline Oval (15.22×11.45mm, Dark Yellowish Green) and 7.65ct Diamond Emerald (14×9mm, 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, Diamond will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.52 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.


8.8 Ct Tourmaline (Oval) 7.65 Ct Diamond (Emerald)
15.22×11.45 mm vs 14×9 mm
142.9 mm²   117.18 mm²
Face-up size outline for 8.8ct Tourmaline (15.22×11.45mm, oval cut)
Face-up size outline for 7.65ct Diamond (14×9mm, emerald cut)
8.8ct Tourmaline Oval (15.22×11.45mm)
7.65ct Diamond Emerald (14×9mm)
Difference: 22% (25.72 mm²)
8.8ct Tourmaline (Oval, 15.22×11.45mm) has approx. 22% more face-up area than 7.65ct Diamond (Emerald, 14×9mm).


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