How to Identify a Real Blue Sapphire Gems:
-A real Blue Sapphire gemstones is one of the hardest known minerals. It can’t be scratched easily
-It won’t show any colour changes if placed in milk for nearly a day

• Properties of Blue Sapphire 
  –Planet: Saturn
  –Indian Name: Neelam
• -Hardness: 9 (Mohs scale)
  –Cosmic Color: Indigo
  –Chakra: Ajna Chakra