Quartz gem stones

Author:	Aitkens, I.
Year:	1932
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
Series:	Information Circular / Bureau of Mines ;
Report Number:	6561
Subjects:	Quartz--United States
	Precious stones--United States
Link:	https://hdl.handle.net/2027/mdp.39015077561614