1.75ct Benitoite (Marquise, 12.26×6.13mm, Dark Blue) vs 3.12ct Sinhalite (Cabochon, 10.47×6.98mm, Brown)
Quick summary: When looked from above (face-up position), 3.12ct Sinhalite (10.47×6.98mm, cabochon cut) appears 12% larger than 1.75ct Benitoite (12.26×6.13mm, marquise cut). See below how they compare side-by-side on a ring and finger.
| 1.75ct Benitoite (marquise cut) |
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3.12ct Sinhalite (cabochon cut) |
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dark blue |
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| 12.26×6.13 mm | 10.47×6.98 mm | |
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Actual sizes of
1.75ct Benitoite Marquise (12.26×6.13mm, Dark Blue)
and
3.12ct Sinhalite Cabochon (10.47×6.98mm, Brown)
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 Sinhalite for a given
carat weight, because it has higher specific gravity
(3.65 vs. 3.48 - this means it's "heavier" compared to Sinhalite 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.
| 1.75 Ct Benitoite (Marquise) | 3.12 Ct Sinhalite (Cabochon) | |
| 12.26×6.13 mm | vs | 10.47×6.98 mm |
| 53.36 mm² | 59.93 mm² |
| 1.75ct Benitoite Marquise (12.26×6.13mm) | |
| 3.12ct Sinhalite Cabochon (10.47×6.98mm) | |
| Difference: 12% (6.57 mm²) |
3.12ct Sinhalite Cabochon (10.47×6.98mm) has approx. 12% more face-up area than 1.75ct Benitoite Marquise (12.26×6.13mm).
Popular comparisons:
- 1ct Benitoite (Marquise, Blue, 10.18 x 5.09) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)
- 1ct Kyanite (Oval, Blue, 7.77 x 5.18) vs. 1ct Tanzanite (Oval, Blue, 8.07 x 5.38)
- 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)
- 1ct Alexandrite (Round, Bluish Green, 6.14 x 6.14) vs. 1ct Emerald (Emerald, Yellowish Green, 7.28 x 5.39)
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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.