The Blue Bottle Tree - Yes, this is polymer clay. I call it Watercolor Agate, and you can get the tutorial here: https://learn.thebluebottletree.com/courses/watercolor-agate-with-polymer- clay/ | Facebook
Polymer Clay Groups on Facebook - The Blue Bottle Tree
Polymer Clay Jewelry Artwork Group | Facebook
Tucson Polymer Clay Guild
The Polymer Clay Artist's Guide - European Cover with Search Press https://www.facebook.com/pages/Search-Press-Art-and-Craft-Books/101643268908 | Facebook
Potomac Polymer Clay Guild | Facebook
Sweetminidollhouse
Polymer Clay Study Group - South Africa | Facebook