Natural Sapphire ( Corundum) – 133,505 cts

106.804.000 $

Natural Sapphire (Corundum) – 133,505 cts, discovered 60 years ago in Nghe An Province, Vietnam. This is a gemstone belonging to the Corundum (Al₂O₃) mineral group, most famous for its blue color. It has a high hardness (9/10 Mohs), second only to diamond, making it durable for high-end jewelry making and industrial applications.
Key characteristics:
  • Chemical composition: Al₂O₃ (aluminum oxide), similar to Ruby.
  • Origin: Formed deep underground under high temperature and pressure, often found with Ruby.
  • Color: Blue