IDENTIFYING DIAMOND TYPES AND LABORATORY-GROWN DIAMONDS WITH CPF

Description

Birefringence of diamond is observed from all directions in order to see the entire pattern and thereby determine type (I or II) and origin (natural or laboratory-grown).

Handout for BrankoGems Academy Intermediate Workshops on “Screening for Diamond Types and ID of Laboratory-grown Diamonds with CPF, UV lamp and EXA PL spectrometer”.

Authors: Branko Deljanin , Dusan Simic, Randy Lightfoot