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0.7ct Tanzanite (Round, 5.66×5.66mm, Blue) vs 0.05ct Diamond (Round, 2.39×2.39mm, White)


Quick summary: When looked from above (face-up position), 0.7ct Tanzanite (5.66×5.66mm, round cut) appears 5.6 times larger than 0.05ct Diamond (2.39×2.39mm, round cut). See below how they compare side-by-side on a ring and finger.

0.7ct Tanzanite (round cut)
vs
 0.05ct Diamond (round cut)
blue
 
white
5.66×5.66 mm 2.39×2.39 mm
actual size
Actual size of 0.7ct Tanzanite (round cut, 5.66×5.66mm, Blue color)   Actual size of 0.05ct Diamond (round cut, 2.39×2.39mm, White color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Blue 0.7ct Tanzanite (round cut, 5.66×5.66mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
White 0.05ct Diamond (round cut, 2.39×2.39mm) 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
 34% vs 15%
Saved...
Ring diameter: 16.9 mm
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Actual sizes of 0.7ct Tanzanite Round (5.66×5.66mm, Blue) and 0.05ct Diamond Round (2.39×2.39mm, 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 Tanzanite for a given carat weight, because it has higher specific gravity (3.52 vs. 3.35 - this means it's "heavier" compared to Tanzanite 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.


0.7 Ct Tanzanite (Round) 0.05 Ct Diamond (Round)
5.66×5.66 mm vs 2.39×2.39 mm
25.16 mm²   4.49 mm²
Face-up size outline for 0.7ct Tanzanite (5.66×5.66mm, round cut)
Face-up size outline for 0.05ct Diamond (2.39×2.39mm, round cut)
0.7ct Tanzanite Round (5.66×5.66mm)
0.05ct Diamond Round (2.39×2.39mm)
Difference: 460% (20.67 mm²)
0.7ct Tanzanite (Round, 5.66×5.66mm) has approx. 460% more face-up area than 0.05ct Diamond (Round, 2.39×2.39mm). In other words, it's 5.6x larger.


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