My personal favorite Gem companies are:
#1. Gaumers of Red Bluff I was told about from one of the men from the gem club. I wish I could “work” there! The store has a perfect layout.
#2. Pretty Rock is an online store from which I just ordered a Gem scale for only $20.00, it can weigh down to .o1g min. and 500g max. it hasn’t come in yet, but when it does, I can be really precise in my S.G. tests.
#3. Rock & Gem Magazine I borrowed a copy from the gem club & it is such a good one that I think I’ll subscribe! it cost about $20 per year $30 for two years, at one issue a month.
But I would never have found out about any of these were it for the Shasta Gem and Mineral Society*
*the Gem club