In some regions alluvial deposits are the resting places of gemstones and gold, platinum, &c.; it is from these deposits that the largest nuggets of gold have been obtained.
Here Tungus diggers were encountered who had extracted handfuls of gold in small nuggets from a stream bed at a depth which they stated to be no greater than 2 ft.
Mesny, has observed similar evidences of the existence of gold at comparatively shallow depths in Koko Nor region, and records that he has seen nuggets, " varying from the size of a pea to that of a hazel-nut," in eastern Tibet.
Many extraordinary nuggets were found, varying from $1 to $20,000 in value.
Are to be found here and there in both continents, and nuggets were objects of worship. Tools and appliances for working metals were of the rudest kind, and if moulds for casting were employed these were broken up; at least no museum contains samples of them, and the processes are not described.