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2.01ct Diamond (Round, 8.2×8.2mm, White) vs 3.05ct Spinel (Cushion, 8.4×8.4mm, Dark Blue)


Quick summary: When looked from above (face-up position), 3.05ct Spinel (8.4×8.4mm, cushion cut) appears 20% larger than 2.01ct Diamond (8.2×8.2mm, round cut). See below how they compare side-by-side on a ring and finger.

2.01ct Diamond (round cut)
vs
 3.05ct Spinel (cushion cut)
white
 
dark blue
8.2×8.2 mm 8.4×8.4 mm
actual size
Actual size of 2.01ct Diamond (round cut, 8.2×8.2mm, White color)   Actual size of 3.05ct Spinel (cushion cut, 8.4×8.4mm, Dark Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
White 2.01ct Diamond (round cut, 8.2×8.2mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Dark Blue 3.05ct Spinel (cushion cut, 8.4×8.4mm) 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
 49% vs 50%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 2.01ct Diamond Round (8.2×8.2mm, White) and 3.05ct Spinel Cushion (8.4×8.4mm, Dark 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, Spinel will face-up slightly smaller than Diamond for a given carat weight, because it has higher specific gravity (3.6 vs. 3.52 - this means it's "slightly heavier" compared to Diamond 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.


2.01 Ct Diamond (Round) 3.05 Ct Spinel (Cushion)
8.2×8.2 mm vs 8.4×8.4 mm
52.81 mm²   63.5 mm²
Face-up size outline for 3.05ct Spinel (8.4×8.4mm, cushion cut)
Face-up size outline for 2.01ct Diamond (8.2×8.2mm, round cut)
2.01ct Diamond Round (8.2×8.2mm)
3.05ct Spinel Cushion (8.4×8.4mm)
Difference: 20% (10.69 mm²)
3.05ct Spinel (Cushion, 8.4×8.4mm) has approx. 20% more face-up area than 2.01ct Diamond (Round, 8.2×8.2mm).


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