Rubetta \r(u)-betta, rub(et)-ta\ as a girl's name is a variant of Ruby (English), and the meaning of Rubetta is "the red gemstone".
The baby name Rubetta sounds like Rupetta and Robetta. Other similar baby names are Ruberta, Renetta, Rhetta, Retta, Roberta, Robette, Reberta, Rosetta, Rubena and Ruthetta.