3ct Benitoite (Cushion, 8.23×8.23mm, Blue) vs 3ct Tanzanite (Cushion, 8.47×8.47mm, Blue)
Quick summary: When looked from above (face-up position), 3ct Tanzanite (8.47×8.47mm, cushion cut) appears 6% larger than 3ct Benitoite (8.23×8.23mm, cushion cut). See below how they compare side-by-side on a ring and finger.
| 3ct Benitoite (cushion cut) |
vs
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3ct Tanzanite (cushion cut) |
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blue |
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| 8.23×8.23 mm | 8.47×8.47 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 Cushion (8.23×8.23mm, Blue)
and
3ct Tanzanite Cushion (8.47×8.47mm, 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 (Cushion) | 3 Ct Tanzanite (Cushion) | |
| 8.23×8.23 mm | vs | 8.47×8.47 mm |
| 60.96 mm² | 64.57 mm² |
| 3ct Benitoite Cushion (8.23×8.23mm) | |
| 3ct Tanzanite Cushion (8.47×8.47mm) | |
| Difference: 6% (3.61 mm²) |
3ct Tanzanite (Cushion, 8.47×8.47mm) has approx. 6% more face-up area than 3ct Benitoite (Cushion, 8.23×8.23mm).
Popular comparisons:
- 0.15ct Benitoite (Cushion, Dark Blue, 3.06 x 3.06) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.65ct Benitoite (Cushion, Blue, 4.99 x 4.99) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 0.5ct Benitoite (Cushion, Blue, 4.58 x 4.58) vs. 0.21ct Spinel (Cushion, Blue, 3.5 x 2.8)
- 0.5ct Benitoite (Cushion, Blue, 4.58 x 4.58) vs. 0.5ct Tourmaline (Cushion, Light Green , 4.83 x 4.83)
- 20ct Benitoite (Cushion, Blue, 15.65 x 15.65) vs. 8.3ct Emerald (Emerald, Green, 14.74 x 10.92)
- 0.81ct Benitoite (Cushion, Dark Blue, 5.37 x 5.37) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1.19ct Benitoite (Cushion, Dark Blue, 6.11 x 6.11) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1.19ct Benitoite (Cushion, Dark Blue, 7 x 5) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2.14ct Benitoite (Cushion, Blue, 7.43 x 7.43) vs. 2.14ct Diamond (Cushion, White, 7.51 x 7.51)