15ct Peridot (Baguette, 18.14×12.09mm, Dark Yellowish Green) vs 15ct Tanzanite (Marquise, 25.96×12.98mm, Light Blue)
Quick summary: When looked from above (face-up position), 15ct Tanzanite (25.96×12.98mm, marquise cut) appears 9% larger than 15ct Peridot (18.14×12.09mm, baguette cut). See below how they compare side-by-side on a ring and finger.
| 15ct Peridot (baguette cut) |
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15ct Tanzanite (marquise cut) |
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dark yellowish green |
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| 18.14×12.09 mm | 25.96×12.98 mm | |
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Actual sizes of
15ct Peridot Baguette (18.14×12.09mm, Dark Yellowish Green)
and
15ct Tanzanite Marquise (25.96×12.98mm, Light 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, Peridot will face-up slightly smaller than Tanzanite for a given
carat weight, because it has higher specific gravity
(3.35 vs. 3.3 - this means it's "slightly 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.
| 15 Ct Peridot (Baguette) | 15 Ct Tanzanite (Marquise) | |
| 18.14×12.09 mm | vs | 25.96×12.98 mm |
| 219.31 mm² | 239.24 mm² |
| 15ct Peridot Baguette (18.14×12.09mm) | |
| 15ct Tanzanite Marquise (25.96×12.98mm) | |
| Difference: 9% (19.93 mm²) |
15ct Tanzanite Marquise (25.96×12.98mm) has approx. 9% more face-up area than 15ct Peridot Baguette (18.14×12.09mm).
Popular comparisons:
- 3ct Peridot (Baguette, Yellowish Green, 10.61 x 7.07) vs. 3ct Zircon (Cushion, Orange, 7.67 x 7.67)
- 1.5ct Peridot (Baguette, Yellowish Green, 8.42 x 5.61) vs. 2ct Diamond (Round, White, 8.19 x 8.19)
- 6ct Peridot (Baguette, Yellowish Green, 13.37 x 8.91) vs. 6ct Peridot (Cushion, Yellowish Green, 10.78 x 10.78)
- 3ct Peridot (Baguette, Yellowish Green, 10.61 x 7.07) vs. 3.2ct Peridot (Oval, Yellowish Green, 11.82 x 7.88)
- 0.15ct Peridot (Baguette, Yellowish Green, 3.9 x 2.6) vs. 0.65ct Sapphire (Cushion, Violet, 4.97 x 4.89)
- 8ct Peridot (Baguette, Yellowish Green, 14.7 x 9.8) vs. 8ct Diamond (Baguette, White, 14.46 x 9.64)
- 11.6ct Peridot (Baguette, Yellowish Green, 19 x 9) vs. 9ct Peridot (Emerald, Yellowish Green, 16 x 8)
- 3.5ct Peridot (Baguette, Yellowish Green, 11.16 x 7.44) vs. 0.25ct Diamond (Baguette, White, 4.56 x 3.04)
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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.