Statements of Changes in Net Assets - USD ($)	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
Statement of Cash Flows [Abstract]
Net Assets-beginning of year	$ 154,177,917	$ 142,168,245	$ 123,449,684
Creations	19,581,163	19,053,855	7,449,999
Redemptions	(5,019,764)	(4,136,768)	(1,915,670)
Net investment loss	(660,166)	(563,414)	(525,570)
Net realized gain (loss) from gold bullion distributed for redemptions	96,601	(148,638)	29,173
Net change in unrealized appreciation (depreciation) on investment in gold bullion	30,303,992	(2,195,363)	13,680,629
Net Assets-end of year	$ 198,479,743	$ 154,177,917	$ 142,168,245