Rough Pyrite / 25-40mm AVG - 1 KILO LOT Menu stud/post earrings These bacteria form mineral layers

These bacteria form mineral layers by cementing local stone

and as a replacement mineral in fossils

Selenite Skyscraper Tower Lamp

Large Clear Quartz Chip Tree with Crystal Base

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Rough Pyrite / 25-40mm AVG - 1 KILO LOT Menu stud/post earrings These bacteria form mineral layersQuantity: 1 kilogram Average size range: 25 to 40 millimeters Iron pyrite has a yellow metallic luster that gives it the nickname fools gold, and it is most often found alongside quartz, in coal beds, and as a replacement mineral in fossils. Ironically, despite the nickname pyrite can sometimes contain actual gold, usually so called invisible gold contained inside the crystalline structure.