Jewelers’ Security Alliance is warning that a diamond switch artist is working the area from Oregon to Southern California. The suspect has been involved in six switch cases on the West Coast, according to the San Diego Police Department. He typically asks to see the largest set of diamond earrings in the store. He later returns and switches the diamonds for cubic zirconias.

JSA says the man tends to focus on high-end department stores and has hit stores in Santa Monica, Calif., and Portland, Ore.

The suspect is described as a white male, 34 years old, 6 feet tall, and weighing 185 pounds He has brown eyes and black hair. Anyone with information is encouraged to contact Det. Timothy Johnson, San Diego Police Department, at (619) 744-9515.