Batu Mulia ( Precious Stone )

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Batu Mulia ( Precious Stone ) merupakan Batu permata yang mempunyai nilai komersial tinggi karena keindahan, kelangkaan, keawetan, dan kekerasannya; msl. Intan, safir, jamrud, opal, dan merah delima

Cari Istilah Geologi Tambang


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