Mariah Carey married Nick Cannon but something fishy, Check out what!

Singer Mariah Carey has wed boyfriend Nick Cannon in a quickie Bahamas ceremony after just a one-month relationship, the New York Post reported. Though, Latina.com was first to report that the two got married, at Carey's home in the Bahamas. Carey was sporting a large piece of bling on her ring fingers, she and Cannon, held hands at the bash at Cadillac Lounge at Tenjune after the premiere of her movie Tennessee at New York's Tribeca Film Festival.
The ring, jeweler Jacob & Co. confirmed to People magazine, is crafted from platinum and features a square, emerald-cut fancy light pink diamond in the center, surrounded by 58 intense pink diamonds, flanked by two half-moon diamonds. The total carat weight of the ring - the center stone alone is 10 carats - is 17 carats, with a value of $2.5 million.
Other Internet reports have speculated that Carey's ring is the same one Cannon gave to his former fiancee, Victoria's Secret model Selita Ebanks. But Ebanks's ring was 12 carats and made of colorless diamonds. This happened only last year that he gave a ring to Selita Ebanks as he proposed in grand fashion — on the Jumbotron in New York's Times Square. Cameras were flashing .He got down on bended knee and the words “Selita, will you marry me?” were projected on to a giant MTVboard and she said yes. But the couple soon split up few months later and Selita gave the ring back weeks later.
Hmmm... now thats what's fishy in here... I'm smelling dirt!

So what do you think both the rings are the same one? Is Cannon making a good use of it?