My periodic table poster is now available! Europium oxide. This is a white white white powder, pure as the driven snow and more powdery. I don't dare open the bottle for fear it will get on everything! Click the source link for an interesting story about where this sample came from. Source: Tryggvi Emilsson and Timothy Brumleve Contributor: Tryggvi Emilsson and Timothy Brumleve Acquired: 6 September, 2002 Price: Donated Size: 0.2" Purity: 86% Sample Group: Powders