Price per carat
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Bi Colour Tourmaline price per carat
What bi colour tourmaline actually sells for, worked out from the 27 stones in our stock. Every figure is a real stone you can buy, not a market estimate.
At a glance
01Bi Colour Tourmaline price by carat size
02In our stock, larger bi colour tourmaline costs less per carat — size is plentiful, so colour and clarity drive the price more.
| Carat size | Typical / ct | Most stones / ct | In stock |
|---|---|---|---|
| Less than 15 ct | $687 | $360–$756 | 9 stones |
| 15–20 ct | $199 | $159–$531 | 11 stones |
| More than 20 ct | $162 | $160–$279 | 7 stones |
“Most stones” is the middle half of our stock in that size, so one exceptional stone cannot skew it.
What moves the price
03Two stones of the same weight can differ several times in price. Colour comes first, its saturation and evenness, then clarity, the quality of the cut, origin and treatment. Every listing states each of these, so you can compare like with like.
Read the bi colour tourmaline guide →From our stock
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Common questions
05How much does bi colour tourmaline cost per carat?
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Across the 27 bi colour tourmaline stones in our stock, the typical price is around $352 per carat, with most stones between $159 and $756 per carat. Colour, clarity, cut and size move a stone within that range.
How much is a bi colour tourmaline under 15 ct?
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Bi Colour Tourmaline of under 15 ct in our stock is typically $687 per carat; the middle half of the 9 stones we hold sit between $360 and $756 per carat.
How much is a 15–20 ct bi colour tourmaline?
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Bi Colour Tourmaline of 15–20 ct in our stock is typically $199 per carat; the middle half of the 11 stones we hold sit between $159 and $531 per carat.
How much is a bi colour tourmaline over 20 ct?
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Bi Colour Tourmaline of over 20 ct in our stock is typically $162 per carat; the middle half of the 7 stones we hold sit between $160 and $279 per carat.
From the journal
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Shop
Bi Colour Tourmaline
Every stone shows its own price, weight, origin and treatment. Browse our bi colour tourmaline, or contact our team for personal help choosing one.