You are purchasing 500 mL of 50 ppm of the finest 99.99+% pure true colloidal Gold (made in the USA) in a clear glass bottle with a black phenolic cap. This product consists of 99.99+% pure Gold nanoparticles colloidally suspended in pure water. This product will be ruined if allowed to freeze, so make sure to have this delivered to an address where it is not delivered to an outside mailbox in freezing conditions. If this product is clear (like water) and not dark, dark red when received then it is ruined; if so, please do not break the seal on the cap, but take photos and we at Sirius Metals will rush a replacement bottle to you and provide a return shipping label.