3ct Benitoite (Princess, 7.81×7.81mm, Blue) vs 3ct Tanzanite (Princess, 8.04×8.04mm, Blue)
Quick summary: When looked from above (face-up position), 3ct Tanzanite (8.04×8.04mm, princess cut) appears 6% larger than 3ct Benitoite (7.81×7.81mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 3ct Benitoite (princess cut) |
vs
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3ct Tanzanite (princess cut) |
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blue |
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| 7.81×7.81 mm | 8.04×8.04 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 Benitoite Princess (7.81×7.81mm, Blue)
and
3ct Tanzanite Princess (8.04×8.04mm, 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, Benitoite will face-up smaller than Tanzanite for a given
carat weight, because it has higher specific gravity
(3.65 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 Benitoite (Princess) | 3 Ct Tanzanite (Princess) | |
| 7.81×7.81 mm | vs | 8.04×8.04 mm |
| 61 mm² | 64.64 mm² |
| 3ct Benitoite Princess (7.81×7.81mm) | |
| 3ct Tanzanite Princess (8.04×8.04mm) | |
| Difference: 6% (3.64 mm²) |
3ct Tanzanite (Princess, 8.04×8.04mm) has approx. 6% more face-up area than 3ct Benitoite (Princess, 7.81×7.81mm).
Popular comparisons:
- 1ct Benitoite (Princess, Blue, 5.54 x 5.54) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Benitoite (Princess, Blue, 5.54 x 5.54) vs. 1.5ct Emerald (Emerald, Dark Green, 8.33 x 6.17)
- 0.79ct Benitoite (Princess, Blue, 5.12 x 5.12) vs. 1ct Diamond (Princess, White, 5.51 x 5.51)
- 0.77ct Benitoite (Princess, Blue, 5.08 x 5.08) vs. 0.79ct Sapphire (Oval, Dark Blue, 6.99 x 4.66)
- 1ct Benitoite (Princess, Dark Blue, 5.54 x 5.54) vs. 0.5ct Benitoite (Princess, Dark Blue, 4.4 x 4.4)
- 1ct Benitoite (Princess, Dark Blue, 5.54 x 5.54) vs. 0.75ct Benitoite (Princess, Dark Blue, 5.03 x 5.03)
- 3ct Benitoite (Princess, Blue, 7.99 x 7.99) vs. 1ct Emerald (Emerald, Green, 8 x 5)
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)
- 1.5ct Tourmaline (Round, Light Red, 7.45 x 7.45) vs. 1.5ct Sapphire (Round, Light Blue, 6.84 x 6.84)