MIned and hand selected directly out of gold bearing quartz veins from hard rock gold mines in Southern Oregon. It's great gold ore for those interested in gold mining, prospecting, geology, earth science, or rock collecting. Also makes a great birthday or Christmas gift. The gold ore that you will receive may not be the exact ore from the pictures but will be from the same gold ore that is mined from the quartz veins. This highly mineralized heavy sulphide complex gold quartz ore has been assayed and contains gold, silver, copper, and may contain other base metals such as iron, manganese, lead (galena), tin, zinc, and other trace elements. Pyrite, chalcopyrite, arsenopyrite, and sometimes serpentine are some of the minerals present. This is the same ore that we process in our own mill. Keep the specimens for your collection if you like and crush the rest. There is no guarantee on how much gold that you will find as that depends mostly upon how you process the ore. Crushing the gold ore and pulverizing the material down to the size of -100 mesh and smaller is recommended and will help in liberating the "free milling" gold. The amount of recovery of values from the left over heavy sulphides after specific gravity separation will depend completely on how you process the material further. Buyer accepts and assumes all responsibility in applying all safety precautions associated with handling and processing this type of gold ore. Buyer must do their due diligence and research all safety precautions; Always wear the correct PPE; eye goggles, an approved respirator when crushing, pulverizing, and processing gold ore. Always wear safety rubber or nitrile gloves at all times when handling, crushing, milling, panning, and during any further processing. Never touch your eyes, mouth, or face without thoroughly washing your hands well first even after using and removing safety gloves. Packing and shipping of USPS Medium Flat Rate boxes will consist of upwards of 25 or more boxes and delivery will occur over 5 plus days. No refunds or returns.