Welcome to Tri-State Materials

Tri-statematerials.com is the on-line home of Tri-State Materials, located near Diamond Valley Lake, in Winchester California. Tri-State Materials offers a large selection of products ranging from decomposed granites, cobbles, and boulders, to flagstones and other exotic specimens. Be sure to check the Frequently Asked Questions (FAQ) page for any questions you might have, or feel free to contact us with any questions not answered or clearly detailed on the site. Hours of Operation: Winchester Mon - Fri 700am - 430pm Saturday 730am - 330pm Summer Hours Coachella Mon - Fri 630am - 400pm
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