Medieval gold ring found in castle in Slovakia has rare purple sapphire imported from Sri Lanka An analysis of a 700-year-old ring reveals a unique reddish-purple sapphire set in 18-karat gold with a lion decoration.

Medieval gold ring found in castle in Slovakia has rare purple sapphire imported from Sri Lanka #Science #Archaeology #Other #MedievalHistory #ArchaeologicalFind #SlovakiaGoldRing