View Single Post
Old Today, 10:47 AM   #6
Sajen
Member
 
Sajen's Avatar
 
Join Date: Aug 2007
Location: Germany, Dortmund
Posts: 9,541
Default

Both, garnets and rubies can scratch glass, rubies have a hardness from 9 on the Mohs scala, garnets between 6,5 and 7,5. Glas has a hardness from 6. With the thick gilding I guess that the stones are rubies.
Sajen is offline   Reply With Quote