47 Best Gravel Patio Ideas (DIY Design Pictures) ... Slate and Gravel Patio. Slate is a fine grained greenish, blue, gray rock. It is usually sold for 18 to 30 per square foot. Though it costs up to three times more than other paving materials, slate still remains to be well loved by landscapers and homeowners because it is natural looking ...
47 Best Gravel Patio Ideas (DIY Design Pictures ...
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