These companies are using NFC technology to identify diamonds

Near field communication, or NFC, is best known for enabling mobile payments. Two companies are now trying to apply the technology to something more glamorous: The diamond industry. 
Thinfilm, which prints NFC tags, and Sarine Technologies, which develops technologies for diamonds and gemstones, are partnering to bring NFC to the precious stones. 
Thinfilm will print NFC tags that show a smartphone user the profiles of individual diamonds — the stone's history, its measurements,