Scientists Investigate Glowing Glass Droplets in Microgravity
It has the color of white gold, but it is hard like quartz glass and at the same time exhibits high elasticity. The smooth surface is free of crystalline structures and makes the material resistant to salts or acids. Individual pieces - for medical implants, for example - can be produced using 3D printing, while larger series - for watch cases, for example - are manufactured using injection molding.
Source: azom.com