Sterling molten nugget & rhinestone ring, any ideas as to this mark ?

[calis_stuff]

I'm thinking this is an artisan piece but I thought maybe someone here may recognize the mark, as my searches are getting me nowhere.

The only mark is this, which I think MAY be Kc or maybe Ko in a slanted style, but those are guesses.

It tests as sterling but no sterling marks.

Any ideas as to who may have made this ?

TIA. 

[hoss640]

Is it Kenneth Cole?

[the_jeweled_feline]

It does look much like the letters in his logo, and kind of in his style, but did he use sterling ?  Defnitely worth checking

[calis_stuff]

Thank you Hoss and Kay. 

I had looked at Kenneth Cole but couldn't find any jewelry marked like this and the fact it's not marked for sterling threw me off.

I will double check my test results and continue looking at his stuff.

Yes Kay, he did/does use sterling.

Thanks again !