·Oct 2, 2017

The cobalt oxide solution is actually gray. It turns cobalt blue only after firing.

Name: The cobalt oxide solution is actually gray. It turns cobalt blue only after firing.
Uploaded: 2017-10-02T20:48:29.602Z
Duration: 4 s
Channel: HALF&HALF
Description: The cobalt oxide solution is actually gray. It turns cobalt blue only after firing. — 4-second loop by HALF&HALF on Coub. Tags: half&half, kulachek, гжель.