Green Banded Malachite Tumbled Semi-Precious Collectible Gemstones

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Malachite is a copper carbonate mineral that comes in various shades of green, often banded or patterned. Malachite is a popular gemstone that has been used for thousands of years. Generally opaque, it has a low hardness but take polish well and does not fade. Tumblestones or "tumbled stones" as they are also called are made by "tumbling" rough crystals in grit for a number of...