Here is the original caption for the pic, which gives the dimensions of the speci, but not the weight.
Exquisite specimen of crystalline Native Gold perched on Quartz matrix!
This is one of the finest miniatures of crystalline Gold that it has been my pleasure to acquire in recent years. The piece is completely crystalline, front and back, and is set off by a large 1 cm trigon crystal placed perfectly in the center. From there, the Native Gold branches off in a latticework of crystals, dendrites and spinels. An amazing specimen under magnification and it is in perfect condition with an intense brilliance.
From the Eagle's Nest Mine, Placer County, California.
Measures 5 cm by 4.3 cm by 1.7 cm in total size.