Before heating (above) and after heating (bel...

Before heating (above) and after heating (below). low temperature heating test about 900c/ 5hours. the diaspore crystal center almost disappeared. #ruby #myanmar #ginza #kyoto #unheated #yangon #jewelry #gems #gemstone #sothebys #japan #research #ring #history#culture#europe#treasure

Takahito Moriさん(@morisruby)がシェアした投稿 - Mar 16, 2018 at 3:13am PDT