5ct Tanzanite (Trillion, 12.81×12.81mm, Blue) vs 2.5ct Diamond (Cushion, 7.91×7.91mm, White)
Quick summary: When looked from above (face-up position), 5ct Tanzanite (12.81×12.81mm, trillion cut) appears 81% larger than 2.5ct Diamond (7.91×7.91mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 5ct Tanzanite (trillion cut) |
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2.5ct Diamond (cushion cut) |
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blue |
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| 12.81×12.81 mm | 7.91×7.91 mm | |
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Actual sizes of
5ct Tanzanite Trillion (12.81×12.81mm, Blue)
and
2.5ct Diamond Cushion (7.91×7.91mm, 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. 3.3 - 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.
| 5 Ct Tanzanite (Trillion) | 2.5 Ct Diamond (Cushion) | |
| 12.81×12.81 mm | vs | 7.91×7.91 mm |
| 101.74 mm² | 56.31 mm² |
| 5ct Tanzanite Trillion (12.81×12.81mm) | |
| 2.5ct Diamond Cushion (7.91×7.91mm) | |
| Difference: 81% (45.43 mm²) |
5ct Tanzanite Trillion (12.81×12.81mm) has approx. 81% more face-up area than 2.5ct Diamond Cushion (7.91×7.91mm).
Popular comparisons:
- 5ct Tanzanite (Trillion, Blue, 12.81 x 12.81) vs. 5ct Tanzanite (Cushion, Blue, 12 x 8)
- 5ct Tanzanite (Trillion, Blue, 12.81 x 12.81) vs. 5ct Tanzanite (Marquise, Blue, 18 x 9)
- 5ct Tanzanite (Trillion, Blue, 12.81 x 12.81) vs. 2.5ct Tanzanite (Trillion, Blue, 10.17 x 10.17)
- 5ct Tanzanite (Trillion, Blue, 12.81 x 12.81) vs. 5ct Tanzanite (Emerald, Blue, 11.64 x 8.62)
- 1ct Tanzanite (Trillion, Blue, 7.49 x 7.49) vs. 1.5ct Tanzanite (Trillion, Blue, 8.58 x 8.58)
- 2ct Tanzanite (Trillion, Blue, 9.44 x 9.44) vs. 1ct Tanzanite (Trillion, Blue, 7.49 x 7.49)
- 2ct Tanzanite (Trillion, Blue, 9.44 x 9.44) vs. 3ct Tanzanite (Trillion, Blue, 10.81 x 10.81)
- 0.7ct Tanzanite (Trillion, Blue, 6 x 6) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
Enter your screen size (diagonal)
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Actual size is currently adjusted to screen.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.
If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a gem, ring and finger will not be shown correctly.