Khloe Kardashian's Diamond Showdown with NBA Boyfriend

The Cleveland Cavaliers got their NBA Championship rings Tuesday night (6.5 karats, 400 diamonds) -- and you can bet your sweet ass Khloe Kardashian was there to inspect the goods!

Khloe was Tristan Thompson's VIP guest (duh) -- and immediately played "Mine's bigger than yours" with her finger jewelry.

Just because Kim's no longer flossin' on social media doesn't mean Khloe has to follow suit, right?

By the way, the Cavs won -- crushing the Knicks 117 to 88.

#GoodLuckCharm