A rock of volcanic origin, it is composed of silica, quartz, alkali, and various minerals. It occurs with a grain size ranging from medium to coarse and may occasionally have megacrysts. The main characteristic is definitely hardness, but the natural presence of micropores characterize a predisposition to absorb any liquid substances.

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  Alaska White Glossy

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  Black Africa glossy

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  Star Galaxy glossy

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  Black Africa brushed

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  Star Galaxy brushed

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  Absolute black brushed