![Set of 11 diamond colour-grading stones](http://www.quicktest.co.uk/cdn/shop/files/cz-colour-4_{width}x.jpg?v=1711455170)
Pickup available from Quicktest (WD18 8JA)
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Details
The only way to colour-grade diamonds is to match the colours against carefully-graded samples. Here are 11 carefully colour-graded stones, 1.00ct each, colours D to N.
This set is unique in that it has 11 stones, and also because it has a built-in UV light (with a USB-rechargeable battery). Though we've no idea what purpose the UV light serves.
Please note, these are colour-grading stones for diamonds, they are not diamonds (they are Cz).
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