Technical agate and chalcedony. Specifications
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Standard sample of greisens GnA
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Standard sample of serpentinite SW
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Standard sample of anorthosite AnK
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Standard sample of aragonite AK
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Moulding clay. Classification
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Clay raw materials for the ceramic industry. Classification
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Clayish materials for ceramic industry. Classification
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Inserts made of semiprecious grown stones for jewellery.
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Minerals and rocks for collections.
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Natural raw turquoise. General specifications.
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Coloured natural stones in the form of residual materials. General Specifications.
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