This product is a trial (evaluation) version of CrossGems software, which is a jewelry design plugin that works on both Rhino 6 and Rhino 7. Panther can work semi-parametric with Rhino infrastructure (RhinoHistory) and fully parametric with Grasshopper infrastructure. From the page that opens when you click the Click / Download button to download the CrossGems software, which is developed for traditional jewelry design, with additional smart pattern creation and satisfactory rendering and material features, in addition to stone setting and prong tools. It is necessary to become a member and then to login. The downloaded program can be used for 30 days without any restrictions. The Panther program requires an internet connection at startup. After the trial version, you will need to purchase one of the CrossGems PRO or CrossGems LITE versions of the product.