Unfortunately I don't have it anymore. It's a Chinese White Jubilee cut, 10mm, and the shank is WST12597. The pink look is just a reflection of the shirt I was wearing. It comes in all metal choices, including rose gold and platinum. The shank is only 2mm, and it's a cathedral setting.
This one was made for me many, many years back by Winfields. I believe it is a Stuller mount. It used to hold my EC diamond, but now it holds a BTD Alexandrite. The side trillions are WinkCZ's.