First, its been a while since I've posted here, but 15 years ago this group helped me tremendously with selecting a diamond for my wife's engagement ring. Fast forward 15 years, and I'm looking to purchase a diamond tennis necklace for our 15th anniversary and know nothing about them. I know she likes shorter lengths (tighter necklaces), I've got about 12k to spend, and not interested in lab grown. I've got some time, but wanted to get the ball rolling now. Any help with education and specific pieces would be greatly appreciated.