Bianco L . Q . S . and Bianco Nero Lithocrete require very little wash down and maintenance , and effectively reflect light in dark corridors and covered walkways . Bianco Nero Lithocrete is made up predominantly of natural obsidian and quartz , and wears like a durable warehouse slab intended for heavy use . With millions of square feet of installed granite Lithocrete nationwide , the record proves that this resilient hardscape remains trouble free year after year .
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