Section 22: Tool Suppliers, Casting Facilities, Gemstone Merchants and Useful Information
A handy compilation of tool suppliers (international), casting facilities (international) and gemstone merchants (Australia & USA). I have also included a PDF with links to the MOHS Measurement Of Hardness Scale (for those of you wanting to work with gems), as well as a link to a GIA article which discusses safe gemstone cleaning in ultrasonic cleaners. You're welcome!
5 Lessons