Nature's inspiration for all modern coated drusies, these wonderful pieces sport totally natural colors along with pyrite's metallic sparkle and shine. Some of the stones have tiny areas where the matrix shows through; this is totally common in the stone and gives it depth and character. These stones have unpolished sides and backs, and a few have natural edges encrusted with pyrite drusy crystals. Note: The pyrite in these pieces tends to oxidize and dull a little over time. This is easily remedied by swishing the piece gently through warm water with a bit of dish soap, rinsing in distilled water, and blow-drying with a hair dryer. Sonic cleaning is not recommended, nor is setting these in heavy-wear jewelry.