These are 10 kg (22 lB) Wholesale Lots of AAA-Grade Rainbow Bismuth Crystals. All crystals in this listing are top grade with amazing intricacy, vivid rainbow colors, small connection points and beautiful structure. The photos are are representative of the sizes and quality you will receive.
The photos show a typical sample of 1 kilogram. Each 10 kg lot will have approximately 150 to 200 pieces measuring approximately 1.5" to 3" in the longest dimension.
These 99.99% pure bismuth crystals are grown in the USA by Mineralplanet. Our bismuth crystals are made from 99.99% refined bismuth ore that is melted and allowed to cool in a controlled manner. The rainbow color is the result of a thin layer of bismuth oxide that forms spontaneously when the freshly pulled, hot crystals are first exposed to air.
The natural color layer of bismuth is soluble in various acids. So, to preserve the color of your crystals, avoid contact with acidic liquids e. As with many mineral specimens bismuth can have sharp edges and should be handled carefully. It should be kept out of reach of young children. Thank you for shopping with us!