SGL consults on a wide range of gemological topics such as proper disclosure, possible treatments, research projects, relative importance of testing, quality control and inventory labeling. As our equipment can test gem materials while set or in the rough, we can also provide non-destructive identification services for miners, mineral collectors and estate dealers. Inventory Analysis
Put your colored stone inventory back to work for you with the assurance of selling it at fair and current market prices. We can advise on re-polishing or updating your collection to make it sell-able and can screen for synthetics. We can also offer advice on current market prices.
Be assured that we are in a professional, secure, and confidential environment for the examination and testing of your goods. We are fully insured. SGL is happy to provide quotes on larger parcels before work is begun. Please contact us for current pricing.
NOTE: SGL services are offered only to trade professionals. We do not provide written appraisals. To those outside the trade, we request you submit items to us through an appraiser, dealer, retailer or other industry professional. This is to ensure safe and secure handling of materials.
Copyright 2019 Stone Group Labs LLC