River Stone 5x8mm Rondelle - Large Hole Beads Tourmaline One of the best-known physical

One of the best-known physical properties of topaz is its hardness

It is a rare variety of Pectolite

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River Stone 5x8mm Rondelle - Large Hole Beads Tourmaline One of the best-known physicalRiver Stone is a form of limestone composed of quartz, calcium carbonate and other materials. Naturally beautiful, it offers a way to work a neutral color into your designs. This stone is relatively soft, according to the Mohs hardness scale, so treat it gently.