3ct Kyanite (Princess, 7.79×7.79mm, Blue) vs 3ct Benitoite (Princess, 7.81×7.81mm, Blue)
Quick summary: When looked from above (face-up position), 3ct Benitoite (7.81×7.81mm, princess cut) appears 0.5% larger than 3ct Kyanite (7.79×7.79mm, princess cut). See below how they compare side-by-side on a ring and finger.
| 3ct Kyanite (princess cut) |
vs
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3ct Benitoite (princess cut) |
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blue |
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| 7.79×7.79 mm | 7.81×7.81 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 Kyanite Princess (7.79×7.79mm, Blue)
and
3ct Benitoite Princess (7.81×7.81mm, 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, Kyanite will face-up slightly smaller than Benitoite for a given
carat weight, because it has higher specific gravity
(3.68 vs. 3.65 - this means it's "slightly heavier" compared to Benitoite 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 Kyanite (Princess) | 3 Ct Benitoite (Princess) | |
| 7.79×7.79 mm | vs | 7.81×7.81 mm |
| 60.68 mm² | 61 mm² |
| 3ct Kyanite Princess (7.79×7.79mm) | |
| 3ct Benitoite Princess (7.81×7.81mm) | |
| Difference: 0.5% (0.32 mm²) |
3ct Benitoite (Princess, 7.81×7.81mm) has approx. 0.5% more face-up area than 3ct Kyanite (Princess, 7.79×7.79mm).
Popular comparisons:
- 1ct Kyanite (Princess, Blue, 5.53 x 5.53) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 1.5ct Kyanite (Princess, Blue, 6.33 x 6.33) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2ct Kyanite (Princess, Blue, 6.96 x 6.96) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 2.5ct Kyanite (Princess, Blue, 7.5 x 7.5) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 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)
- 1ct Aquamarine (Oval, Light Blue, 8 x 6) vs. 1ct Spinel (Oval, Gray, 8 x 6)
- 1.16ct Diamond (Round, White, 6.82 x 6.85) vs. 1.2ct Diamond (Round, White, 6.82 x 6.86)
- 6ct Morganite (Cushion, Light Red, 12 x 10) vs. 3.5ct Sapphire (Cushion, Blue, 8.49 x 8.49)