Glittery glue dots - It looks like those glass filler stones (or maybe dried resin or glue? hmmm), E-6000 and glitter for the materials - No instructions, but it seems pretty simple going from the pictures. :)
Love this glitter - on black clay.?
Use the cutter as a frame to select the desired section of the pattern for the cabochon
Knightwork: Playing with Clay: Thing A Day Day 1 Polymer Clay Texture Sheets
Tutorial: How to apply Resin to polymer clay pendants...the secret to success