Definition
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Etymology
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Blue Granite is an igneous rock and a variety of Larvikite, notable for the presence of thumbnail-sized blue crystals of feldspar
From the color of rock, Blue
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock
Diorite is a grey to dark-grey intermediate intrusive igneous rock composed principally of plagioclase feldspar,biotite, hornblende, and pyroxene
From early 19th century coined in French, formed irregularly from Greek diorizein distinguish
Coarse Grained Rock, Medium Grained Rock, Opaque Rock