I am taking credit for these watches. I met with Time & Gems a while ago when seeing their progress with DLC and PVD treatments on Rolex watch modifications, and suggested that they give a two tone "Rolesor" watch this type of treatment. Black and gold is a very nice combo, (especially yellow gold and black), and to be honest, I don't think I've ever seen a Rolex mod that did this (though I could be wrong). So what Time & Gems did is black DLC coat the steel portions of these watches, and leave the gold parts of the watch and the dials alone. DLC is a very hard coating and is becoming favored to PVD at many brands. Time & Gems seems to confused the term DLC and PVD - and they seem to use them both. You can read more about the watch on their blog here. So unless I am missing something, these watches are DLC coated, not PVD. Pardon their confusion.
Time & Gems likes to work with pre-owned Rolex watches as a way of breathing life back into them. I think both the Daytona "Black Gold" and the Submariner "Black" gold came out nicely. It would also look good to a GMT Master II in this style.
The video where you can see the watches has a pretty ridiculous sound track. I mean I get that the watches are important to them, but there is a fine line between self-promotion and self-important. So just ignore the "biblical" tone of the music. No pricing information has been released yet, but I will try to update the post when it is.