Buy riser stones and large tread stones from the stone supplier. Limestone, granite, sandstone and slate are the most common ...

Siliceous stone: Made mainly of silica and quartz-like particles. Types of siliceous stone are granite, sandstone, quartzite and slate. They can tolerate mild acidic cleaning solutions because ...

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Previous analysis of the roughly 5,000-year old Neolithic site identified two main types of stone–sarsens and bluestones. The sarsens were sourced about 15 miles away in the West Woods near ...

Substantial research has focused on the types of stone used to assemble the iconic circle located in Wiltshire over the years, and previous analysis has shown that bluestones, a type of fine ...

"We already have strong evidence they moved different rock types huge distances...so why not the Altar Stone from [the Orcadian Basin]? Why specifically might they have picked this rock from so ...