An investigation of the gemmological potential of Spain has shown that only four minerals,beryl, topaz, quartz and olivine, have possibility for exploitation and commercialization. Deposits of other minerals, like andalusite, garnet,prehnite, variscite and apatite, could occasionally supply stones of gemmological interest. The majority of these deposits are found in the Iberian Massif (W Spain). Mineralotects are mainly pegmatites with greisen phenomena,contact metamorphism aureoles in pelitic rocks, skarns, hydrothermal ore veins emplaced in granite or pelitic series, supergene alteration of ore bodies and dunite enclaves in Recent basic rocks. The most significant data relating to the principal deposits and the characteristics of the minerals of gemmological interst are summarized in this paper

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