Document and Entity Information	3 Months Ended
	Apr. 30, 2012	Jun. 18, 2012
Document and Entity Information
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2012
Trading Symbol	ggsm
Entity Registrant Name	Gold & Gemstone Mining Inc.
Entity Central Index Key	0001485156
Current Fiscal Year End Date	--01-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		330,750,000
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well Known Seasoned Issuer	No
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1