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About product and suppliers:
        Alibaba.com offers 814 porphyry stone products. About 39% of these are paving stone, 29% are granite, and 1% are marble. 

A wide variety of porphyry stone options are available to you, such as free samples, paid samples. 

There are 814 porphyry stone suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of porphyry stone respectively. 

Porphyry stone products are most popular in North America, Western Europe, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 443 with Other, 130 with ISO9001, and 77 with SA8000 certification.