This piece in slab form was sold to me as Condor agate at a gemshow. I can not say for certain but I really think they where right. It has a real nice banding pattern and will fit a 40x30mm finding no problem. 2mm girdle height will make for easy setting or wrapping too.
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.