Born Maria Tashjian in West Islip, New York, Tash attended Columbia University and the Fashion Institute of Technology before opening her first studio, Venus Modern Body Art, in Manhattan's East Village in 1993. The shop evolved into Venus by Maria Tash and finally her own name. She modified industry methods to create better-fitting pieces, including a "threaded" earring backing and "invisible set" diamonds notched below the crown.
From a flagship in New York in 2004, the brand expanded globally — a 2016 opening at Liberty London, then permanent locations in Rome, Dublin, Harrods London and Dubai. Her designs have been worn by Hailey Bieber, Rihanna, Ashley Graham and Queen Rania.