Egg Pendant Box Silver 84 Imperial Russian S. I dont know what kind of stone. The jeweler said that it was a natural stone, similar to a ruby.The item "Egg Pendant Box Silver 84 Imperial Russian 1900 Double Eagle" is in sale since Monday, November 29, 2021. This item is in the category "Antiques\Silver\Non-U. The seller is "ua_levs" and is located in Kiev. This item can be shipped worldwide.