This small but attractive crystalline gold nugget from the Harvard Mine in Jamestown, California is 5/16" (9 mm) long. The weight is 5.7 Grains (0.37 Gram). It has a very beautiful crystalline structure and is a wonderful gold specimen to add to your collection. The Harvard mine has been closed for years so it is almost impossible to find gold specimens from this location. I only have a couple left.