I am currently searching for an omc or acc diamond. My local jeweler had an omc in an estate ring. It is in my budget, but the only flaw is a natural in the right hand corner of the diamond. It is graded as a m/n color 1.98 ct. The place said I could leave it as is or have it recut. Any opinions? I guess I'm worried about durability but I like that it is an actual antique diamond.