3ct Tanzanite (Trillion, 10.81×10.81mm, Blue) vs 2ct Diamond (Round, 8.19×8.19mm, White)
Quick summary: When looked from above (face-up position), 3ct Tanzanite (10.81×10.81mm, trillion cut) appears 38% larger than 2ct Diamond (8.19×8.19mm, round cut). See below how they compare side-by-side on a ring and finger.
| 3ct Tanzanite (trillion cut) |
vs
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2ct Diamond (round cut) |
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blue |
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| 10.81×10.81 mm | 8.19×8.19 mm | |
| actual size | ||
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Actual size is set for screen
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Ring:
Skin tone:
Ring width: 3.0 mm
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64 mm |
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Actual sizes of
3ct Tanzanite Trillion (10.81×10.81mm, Blue)
and
2ct Diamond Round (8.19×8.19mm, 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.
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.
| 3 Ct Tanzanite (Trillion) | 2 Ct Diamond (Round) | |
| 10.81×10.81 mm | vs | 8.19×8.19 mm |
| 72.45 mm² | 52.68 mm² |
| 3ct Tanzanite Trillion (10.81×10.81mm) | |
| 2ct Diamond Round (8.19×8.19mm) | |
| Difference: 38% (19.77 mm²) |
3ct Tanzanite (Trillion, 10.81×10.81mm) has approx. 38% more face-up area than 2ct Diamond (Round, 8.19×8.19mm).
Popular comparisons:
- 3ct Tanzanite (Trillion, Blue, 10.81 x 10.81) vs. 3ct Tanzanite (Oval, Blue, 11.63 x 7.75)
- 3ct Tanzanite (Trillion, Blue, 10.81 x 10.81) vs. 3ct Tanzanite (Marquise, Blue, 15.18 x 7.59)
- 3ct Tanzanite (Trillion, Blue, 10.81 x 10.81) vs. 5ct Tanzanite (Cushion, Blue, 12 x 8)
- 3ct Tanzanite (Trillion, Blue, 10.81 x 10.81) vs. 3ct Tanzanite (Emerald, Blue, 9.81 x 7.27)
- 3ct Tanzanite (Trillion, Blue, 10.81 x 10.81) vs. 2ct Aquamarine (Trillion, Light Bluish Green, 10.1 x 10.1)
- 3ct Tanzanite (Trillion, Blue, 10.81 x 10.81) vs. 1.5ct Diamond (Round, White, 7.44 x 7.44)
- 3ct Tanzanite (Trillion, Blue, 10.81 x 10.81) vs. 3ct Ruby (Trillion, Red, 10.14 x 10.14)
- 3ct Tanzanite (Trillion, Blue, 10.81 x 10.81) vs. 3.5ct Tanzanite (Trillion, Blue, 11.38 x 11.38)