QWe own four vintage art deco cobalt blue mirror glass tables that we love because they fit into our small living room space. However, after 25 years, the glass has some chipped areas underneath ...

The cobalt used for blue-and-white ceramics was locally mined in China and has a high manganese content. But famille rose porcelain needed finer European cobalt, which gives a purer blue.

This article deals with the occurrence of Mycenaean glass and frit jewelry from palatial buildings at Thebes (about 1340/1330-1190/1180 B.C.) and the cemetery at Elateia (about 1425/1390-1000/950 B.C.