Document and Entity Information - shares	3 Months Ended
	Oct. 31, 2018	Mar. 20, 2019
Document And Entity Information
Entity Registrant Name	Precious Investments, Inc.
Entity Central Index Key	0001304741
Document Type	10-Q
Document Period End Date	Oct. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--07-31
Is Entity's Reporting Status Current?	No
Is Entity Emerging Growth Company?	false
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Common Stock, Shares Outstanding		14,356,299
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2019