That is what Stella Dimoko Korkus is reporting in this week's Encomium magazine.
Here's what she wrote

"The ring is actually on her left index finger. She is not hiding but she's also not talking about it. She got the ring sometime last year from Ikechukwu (Uche) and the two are planning a wedding. Some of Uche's very close friends know of this engagement and are helping her keep it under the carpet. The ring is a simple silver ring with three diamond stones decorating it.

I found a pic (above) of her wearing a ring similar to what Stella described. I don't know if she's truly engaged, but if she is, then a big congrats to her!