big copper sulphate crystal on white background

algicide background blue bluestone bluevitriol bright chalcanthite chemical chemistry closeup color colorful compound copper coppersulfate coppersulphate crystal cupric cupricsulfate cuso4 formula fromabove gem gemstone geode geological geology ground grow herbicide hygroscopic jewel macro material mineral natural object pentahydrate precious pretty raw rock salt science sulfate sulphate unique view vitriol white