Thank you to all the members of the faceting community that have supported GemCad over many years. I am now retired and no longer offer GemCad for sale. You may use GemCad and GemRay for Windows free of charge, but you may not sell it or redistribute it. Please link to www.gemcad.com so long as this site is active.

You may use the following registration keys free of charge:

  User name: anybody (Note: literally just the word anybody, not your name)
  GemCad key: 7672
  GemRay key: 1336746504

If you find the software useful, please make a contribution to your local food bank or other charitable organization and send me a note by email or text via the Contact tab above.

--Robert Strickland, January 2023

Introducing
GemRay for Windows

rendering of Cube illusion triangle, rocking rendering of diamond tilting, rocking