Deep Cabochons 4 x 3.25 x .45 Blue This cabochon mold allows beaders to make their own cabochons in the colors desired. No more waiting to find 'just the right cabochon'! Free Polymer Clay Project Instructions Included showing how to mold cabochons with 4 mm base, 2 mm base and flat back cabochons. The bottom base of the cabochon is 4mm deep with 90 flat sides. The dome of the cabochon rises above the base. This allows the cabochon to dome up above the sides of the bezel creating a rich, high stone insert. You can make cabochons with bases 4 mm, and 2 mm deep. You can also make a flat back cabochon with no base. By using the instructions and measurements on the insert, cabochons can be created in a variety of depths. This extra Deep Cabochon mold is designed to fit Amate Bezels.