How does John Lescroart use imagery in Guilt?

Imagery:

"The fucking chintzy little fifteen-hundred-dollar, quarter-carat trinket—he wanted to rip it off her finger, stomp it under his foot, slap her silly for accepting the stupid thing. But he wasn't going to do that. He was going to smile and say, 'It's really nice Christina. I'm happy for both of you....'"