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20ct Citrine (Round, 18.62×18.62mm, Light Orange) vs 30ct Diamond (Round, 20.2×20.2mm, White)


Quick summary: When looked from above (face-up position), 30ct Diamond (20.2×20.2mm, round cut) appears 18% larger than 20ct Citrine (18.62×18.62mm, round cut). See below how they compare side-by-side on a ring and finger.

20ct Citrine (round cut)
vs
 30ct Diamond (round cut)
light orange
 
white
18.62×18.62 mm 20.2×20.2 mm
actual size
Actual size of 20ct Citrine (round cut, 18.62×18.62mm, Light Orange color)   Actual size of 30ct Diamond (round cut, 20.2×20.2mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Light Orange 20ct Citrine (round cut, 18.62×18.62mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 30ct Diamond (round cut, 20.2×20.2mm) 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
 111% vs 120%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 20ct Citrine Round (18.62×18.62mm, Light Orange) and 30ct Diamond Round (20.2×20.2mm, 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 Citrine for a given carat weight, because it has higher specific gravity (3.52 vs. 2.65 - this means it's "heavier" compared to Citrine 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.


20 Ct Citrine (Round) 30 Ct Diamond (Round)
18.62×18.62 mm vs 20.2×20.2 mm
272.3 mm²   320.47 mm²
Face-up size outline for 30ct Diamond (20.2×20.2mm, round cut)
Face-up size outline for 20ct Citrine (18.62×18.62mm, round cut)
20ct Citrine Round (18.62×18.62mm)
30ct Diamond Round (20.2×20.2mm)
Difference: 18% (48.17 mm²)
30ct Diamond (Round, 20.2×20.2mm) has approx. 18% more face-up area than 20ct Citrine (Round, 18.62×18.62mm).


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