21mm Rust Sandstone Gemstone Beads Flat Round Sandstone chakra stones,gemstone,raw stone,ball beads,gemstone jewelry,rough,rock,

21mm Rust Sandstone Gemstone Beads Flat Round Sandstone chakra stones,gemstone,raw stone,ball beads,gemstone jewelry,rough,rock,/2mm hole opening/ 6mm bead thickness/Large sized sandstone bead great for dramatic fashion beading projects/

Sandstone (sometimes known as arenite) is a clastic sedimentary rock composed mainly of sand-sized minerals or rock grains.

Most sandstone is composed of quartz or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any color, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colors of sandstone have been strongly identified with certain regions.

Rock formations that are primarily composed of sandstone usually allow percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Fine-grained aquifers, such as sandstones, are better able to filter out pollutants from the surface than are rocks with cracks and crevices, such as limestone or other rocks fractured by seismic activity.

Quartz-bearing sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts.

***********Sandstone,natural stone,healing stone,chakra stones,gemstone,raw stone,ball beads,,birthstone,gemstone jewelry,rough,rock, ***

item# 789222021221 (20mm) 74.2grams

item# 789222021238(18mm)71.6grams***************************************

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