+Porphyry is a distinct [igneous rock](/wiki/igneous_rock) characterized by large, clearly visible crystals (phenocrysts) set within a fine-grained matrix. Often purplish-red, its ancient beauty led to its revered use in monuments and art, notably throughout the [Roman Empire](/wiki/roman_empire).
+## See also
+- [Geology](/wiki/geology)
+- [Volcanic Rock](/wiki/volcanic_rock)
+- [Stone](/wiki/stone)
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