The distinct sparkle and reflective glint visible across a polished granite surface come primarily from its mineral composition, specifically the presence of translucent quartz crystals and reflective mica flakes. Biotite and muscovite mica form thin, sheet-like crystals that catch and reflect light at brilliant angles, while feldspar crystals provide the background color and glassy luster. These interlocked minerals give granite its characteristic depth, sparkle, and rich visual texture under kitchen lighting.
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