Celebrity jeweler Ben Baller's Instagram Said: "Congrats to @RobKardashian & @BlacChyna on getting engaged. Rob, I have never seen you this happy before and I've known you since you were a teenager. I'm glad you came to your day 1 homie to get this massiveð for your lady. You know I don't play when it comes to diamonds. God bless #7Carats #VVS #IFANDCO #BlacChyna #RobKardashian"