INVENTORIES (Detail) - USD ($)		Sep. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Line Items]
Raw materials	[1]	$ 32,787,260	$ 0
Work-in-progress	[2]	71,524,413	90,406,021
Finished goods	[3]	42,952,732	44,636,692
Total inventory		$ 147,264,405	$ 135,042,713

[1] Included 964,769 grams of Au9999 gold as of September 30, 2018 and Nil Au9999 gold as of December 31, 2017.

[2] Included 2,110,166 grams of Au9999 gold as of September 30, 2018 and 2,508,182 grams of Au9999 gold as of December 31, 2017.

[3] Included 1,258,327 grams of Au9999 gold as of September 30, 2018 and 1,231,586 grams of Au9999 gold as of December 31, 2017.