Geminal Curse

The Geminal Curse derives its name from the zodiac sign Gemini which literally means twins. This term was used for the first time in Harry Potter and the Deathly Hallows. When Harry, Ron, Hermione along with Griphook are at Bellatrix Lestrange's vault at Gringotts, and Harry was within distance of a horcrux, Hermione happened to touch a gold cup. The geminal curse usually causes all objects, touched with human hands to multiply. A potentially dangerous curse, there is no counter curse known for this.