The singer spent thousands of pounds having the dummies made so that she can take her crystals on tour with her, The Sun reports.
Each crystal contains a mineral representing a different type of energy, including fire agate for 'sexuality' and 'creativity', aegirine for 'cleansing and purification' and agates to 'awaken higher dimensional energies'.
GaGa reportedly keeps the dummies in a special box which no-one is allowed to touch.
"GaGa is a great believer in these crystals," said a source.
"She's got them all over her pad and she has had them made into dummies so she can take them on tour. GaGa thinks sucking the crystal will install the energies in her body and mind quicker.
"It sounds strange but she's adamant they work."
GaGa has previously consulted astrologers over her fears that the stars would be aligned in the wrong direction for a portion of her upcoming 'Born This Way Ball' tour.
She has been very involved in the production process for the tour, which kicks off in South Korea on April 27 and comes to the UK from September 8. North American dates are yet to be announced.
Tickets for Lady GaGa's 'Born This Way Ball' UK tour are now available here.
Watch the music video for Lady GaGa's 'Judas' below: