The 29-year-old singer misplaced her art-deco inspired diamond ring on February 4 when it flew off her hand as she threw beads into the crowd, reported Female First.
Solange had designed the ring with jeweller Lorraine Schwartz for her 2014 wedding to Alan Ferguson.
She was Honorary Muse in the Krewe of Muses parade at Mardi Gras and the group put out an appeal on social media for the ring.
They wrote on Facebook, "Honorary Muse Solange lost her wedding ring between Toledano and Foucher. Reward if found! Contact info@kreweofmuses.Org (sic)."