The process of diamond and gemstone recovery from karat gold jewelry scrap is far more complex and time consuming than a direct melt and assay recovery. Jewelry that contains recoverable diamond and gemstone melee will always yield a much higher value, as long as the refiner you choose is implementing sound wet chemistry processes that minimizes the potential for mechanical losses of metal and damage to the your valuable gemstones. You should expect the refiner to charge higher processing or treatment fees for this service as well as allowing a little more time for final results but in the end, the additional value you'll receive back from the sale of your stones more than justifies any inconvenience.
Most, if not all, pawn shop collect and bin their scrap jewelry and eventually send this collection off to a refiner. If you've dealt in scrap jewelry before, there are a couple of words that you've definitely heard when it's time to send your scrap off to your refiner; smelt and assay. Do you know the difference between these techniques and which each accomplishes? Jack Brown of Mid-State Recycling & Refining shared this video with PawnMaster that goes over the two most popular refinement techniques and how Mid-State helps their customers get the most out of their scrap jewelry and metals.