... Selenium ball 99.5% 99.9% 99.99% 99.999% 99.9999%Selenium powder Se99.9% 200mesh. Shape:lump, grain, ingotSelenium ingot ... Se99.9%,99.99% ,99.999%,99.9999% Shape:lump, grain, ingotSelenium ... , grain, ingotSelenium lump Se99.9%,99.99% ,99.999%,99.9999% Shape:lump, grain, ingotAppearence and shape: Grey or black glass material ...