I have a Ph.D. in Chemistry (awarded 1994) and 20 years experience in industry including instrumentation, manufacturing, and applications/process chemistry. I am interested in your project but would like to clarify your requirements. For example you make no indication of scale of the operation you wish to set up, i.e. laboratory scale, pilot plant, or a full scale high volume production plant? Scale will greatly impact the recommended procedures, including equipment, site prep (lab or plant design, layout and construction), suppliers and supply chains, etc.
I infer you do want gemstone quality products, presumably for the commercial consumer market.
I propose an initial project kickoff meeting. Deliverables will be minutes of the meeting and a quotation/proposal for how to proceed based on our discussions and an improved understanding of your needs.