Batu Giok ( Jade )

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Batu Giok ( Jade ) merupakan Jenis batu permata yang mempunyai rumus kimia NaSl SiO2 kekerasan 6,5-7 skala mohs, berat jenis 3,0-3,5, wana hijau pucat samapai hijau tua

Cari Istilah Geologi Tambang


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