Great Shapes templates are made of light-weight, transparent plastic that are perfect for lapidary cabochons, jewelry designing, and other art and craft projects. Designed by Donald K Olson & Associates. Don and Gloria have been in the gemstones and mineral business for over 45 years, and during that time they have developed a collection of hundreds of shapes for their cabochon stencils and are sharing their favorites with you through this set of templates. Use them to stencil your cab shapes onto slabs with a scribe before trimming. Also check out John Heusler cabochon templates for other stencil shapes.