Lopez has not been shy about her engagement to Ben Affleck. Last week, she was photographed wearing her 8.5-carat natural green diamond ring while out looking at homes with the Deep Water actor and two of his three kids. As she otherwise looked casual in jeans and a white tank top, the ring made for the most glamorous accessory. According to reports, the emerald-cut green diamond is incredibly rare and could be worth up to $10 million—way more than the alleged $2.5 million Affleck spent on the 6.1-carat pink diamond that he proposed to Lopez with the first time around, in 2002. In her newsletter, On the JLo, she recently revealed how Affleck popped the question this time.