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according to the Mohs hardness scale
naturally hypo-allergenic and 100% lead-safe
naturally occurring mineral composed of pure carbon
Peruvian Turquoise is an important ornamental mineral for jewelry and adorned the ceremonial dress of early native Inkas
has been excavated and repurposed into contemporary beads
Ice Obsidian 10x20mm Double Drill - 8-Inch featured_01292026 according to the Mohs hardnessIce Obsidian is a light brown to green to gray volcanic stone. Obsidian is formed when felsic lava cools without crystal growth. It is sometimes used for scalpel blades in cardiac surgery, as Obsidian can be formed into a blade many times sharper than steel surgical blades.