Cool Tools resident artist, Karen Trexler studied metalsmithing and jewelry design in college and received a BFA from Ball State University. Karen then continued her studies at the University of Wisconsin - Madison, and received her MFA in the spring of 2018 before joining the Cool Tools team.

In this video, Karen gives step by step instruction on how to use Separation Enamel for a marbleized look. She cuts cabochon shapes from Cyprus™ Copper Clay and lets them dry using a drying form. Once the clay is fired, she enamels on the cabochon, using both Thompson Enamels and Separation Enamel to create a gemstone look.