Noah Webster's Dictionary (n.) A term used somewhat loosely to designate a rock consisting of a fine-grained base (usually feldspathic) through which crystals, as of feldspar or quartz, are disseminated. There are red, purple, and green varieties, which are highly esteemed as marbles. Int. Standard Bible Encyclopedia PORPHYRY por'-fi-ri (in Esther 1:6, the Revised Version margin has "porphyry" (the King James Version margin "porphyre") for bahaT, English Versions of the Bible "red (marble)"; the Septuagint has smaragdtes, which was a green stone): Porphyry is an igneous rock containing distinct crystals of feldspar in a feldspathic matrix. It may be purple or of other colors, as green. "Porphyry" is from porphureos, "purple."

Multi-Version Concordance Porphyry (1 Occurrence) Esther 1:6 There were hangings of white, green, and blue material, fastened with cords of fine linen and purple to silver rings and marble pillars. The couches were of gold and silver, on a pavement of red, white, yellow, and black marble. (See NAS RSV NIV)