Amethyst 2-3x6-7mm Faceted Irregular Banded Tyre Bead - 15-16 Inch Natural Chinese Turquoise Rainbow Obsidian is known as

Rainbow Obsidian is known as a grounding and protective stone

Please avoid prolonged exposure to water

It is also one of the hardest

Copper Plated

They are all varieties of the mineral corundum

Amethyst 2-3x6-7mm Faceted Irregular Banded Tyre Bead - 15-16 Inch Natural Chinese Turquoise Rainbow Obsidian is known asAmethyst is a beautiful purple stone, known as a Gem of Fire by ancient cultures. It has been greatly sought after throughout history and was at times valued as highly as Diamond. Today, this semi to precious variety of quartz is found in many locations around the world. The presence of Manganese within the stone produces the purple hue, and variation of the amount of iron in the stone creates a color range from reddish purple to deep violet to light