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1.75ct Diopside (Emerald, 8.21×6.08mm, Green) vs 1.75ct Tourmaline (Emerald, 8.38×6.21mm, Violet)


Quick summary: When looked from above (face-up position), 1.75ct Tourmaline (8.38×6.21mm, emerald cut) appears 4% larger than 1.75ct Diopside (8.21×6.08mm, emerald cut). See below how they compare side-by-side on a ring and finger.

1.75ct Diopside (emerald cut)
vs
 1.75ct Tourmaline (emerald cut)
green
 
violet
8.21×6.08 mm 8.38×6.21 mm
actual size
Actual size of 1.75ct Diopside (emerald cut, 8.21×6.08mm, Green color)   Actual size of 1.75ct Tourmaline (emerald cut, 8.38×6.21mm, Violet color)
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Green 1.75ct Diopside (emerald cut, 8.21×6.08mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Violet 1.75ct Tourmaline (emerald cut, 8.38×6.21mm) 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
 36% vs 37%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 1.75ct Diopside Emerald (8.21×6.08mm, Green) and 1.75ct Tourmaline Emerald (8.38×6.21mm, 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, Diopside will face-up smaller than Tourmaline for a given carat weight, because it has higher specific gravity (3.3 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.


1.75 Ct Diopside (Emerald) 1.75 Ct Tourmaline (Emerald)
8.21×6.08 mm vs 8.38×6.21 mm
46.42 mm²   48.4 mm²
Face-up size outline for 1.75ct Tourmaline (8.38×6.21mm, emerald cut)
Face-up size outline for 1.75ct Diopside (8.21×6.08mm, emerald cut)
1.75ct Diopside Emerald (8.21×6.08mm)
1.75ct Tourmaline Emerald (8.38×6.21mm)
Difference: 4% (1.98 mm²)
1.75ct Tourmaline (Emerald, 8.38×6.21mm) has approx. 4% more face-up area than 1.75ct Diopside (Emerald, 8.21×6.08mm).


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