Theoretically, a consumer is allowed to buy a rough stone, if he finds someone who would sell it to him. In some countries, like South-Africa, possessing rough diamonds is only allowed to licensed persons or companies, but such countries are exceptions.
However, do not think that rough is cheap just because it is rough. The value of the resulting polished is already an integral part of the price.
Therefore, price depends on shape, cristallisation, quality, colour, clarity, fluorescence, risk of breaking, and last but not least, how often you will buy 1,000's of carats of the same quality.
Try to purchase the rough in the USA as the Kimberly Process requirements for importing are complicated.
If you cant find something PM me and I will organise something for you.
Johan
If it is just a mineral specimen (not necasarily a facetor's dream)... check THESE out
It is much harder to find one in matrix (= host rock) since from industrial mining you just get "floaters" (= crystals separated from matrix). Here (Link) is one example. Chinese specimens of the same sort are more frequently available, but you need a loupe to see the little ( ~ 3-4mm) diamond crystals in those.
If you ever get a chance to go , the first week of February to the Tuscon Gem show, you can find the rough crystals there along with everything else. I found this stuff with the vendors that was opened to the public.
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