I looked at some semi mounts at a local jeweler, and mind you, they have just now started offering white metals and halo mountings here. I described my diamond, and said it's J or possibly K color, and I want YG or rose gold ,and a halo style ring.

Clerk said "That will make your stone look more yellow."

Me: "Yes, but a J or K *is* yellow to me, and I don't wear it because it's set in platinum and the stone is too tinted for that white metal, especially in office lighting."

She then told me that diamond would not look right in a semimount because those all have E/F color pave and that's too white for my diamond. I said "I don't think so, because I have an M color diamond in a mounting with whiter sidestones, and there were a lot of antique diamonds of very warm color deliberately set in platinum with very white sidestones, so there's a historical precedent for doing that; it's just a different look."

Clerk looked at me like I had two heads, lol. I am glad I can always talk to the Internet people. Sigh. Why do I waste my gasoline and time, locally. lol