I have over 35 years experience in jewelry making; gold, silver, and platinum; a B.S. in geological engineering, M.S. in metallurgical engineering; over 30 years experience faceting and other gem-cutting techniques; active field collector of minerals and crystals; owner of a productive mining claim for amethyst crystals, especially "scepters"; shop owner in Butte, Montana, where we do custom jewelry, sell mineral specimens, crystals, cut gems, lapidary services, gold refining and recovery, field geology, mineral identification, gem identification.; www.asterism-services.com ASTERISM Services