Here is an older laguna agate with a calcite/quartz heart mixture. It has a nice color band and polished on both side. It is a flat cabochon with a 5mm girdle roughly. the shape is a natural freeform as to follow the shape of the agate banding so not to loose any.
Visit my Sold cabochon Gallery to see past opals I have cut. You will find other examples of materials, shapes, sizes, colors, and in general see my work there. Some stones date back over 15 years in there. I don’t show everything I cut, just the ones I really liked over the years. Please let me know if you have any questions about those materials.
Its also important to visit your local rockclub if you have one near by. Its a great place to start if you are new to gems and minerals. Thank you.