CZ stands for Cubic Zirconium.  It is a widely used imitation of diamond.  CZ’s lower hardness, higher specific gravity and lower thermal conductivity make it easy to distinguish for a trained gemologist.

0 replies

Leave a Reply

Want to join the discussion?
Feel free to contribute!

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.