Heraeus Black Quartz (HBQ?) is a unique black opaque quartz glass composite that benefits from high purity and other properties of our advanced white opaque (OM?) and clear fused (HSQ?) quartz solutions. HBQ? offers smart answers to individual problems, and new answers to old material challenges. Convince yourself and step into a new world of possibilities with Heraeus Black Quartz. To learn more follow the links below.