Basalt is a dark-colored, fine-grained, igneous rock composed mainly of plagioclase and pyroxene minerals. It most commonly forms as an extrusive rock, such as a lava flow, but can also form in small intrusive bodies, such as an igneous dike or a thin sill.
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SEMI PRECIOUS STONES
Semi Precious Stones takes an excellent polish and can be made into JEWELERY, CARVINGS, TILES & SLABS, BOXES, STATUES, ORNAMENTS, SMALL STATUES, VASES, HANDICRAFT ARTICLES, DECORATION, HEALING.
Also semi precious stones have minerals as their compositions and can be used in various industries for mineral purpose.