See Kathy Hilton’s Diamond Ring from Rick Hilton (PHOTOS)

While there were many buzzy moments in Part 3 of The Real Housewives of Beverly Hills Season 13 reunion, we couldn’t take our eyes off Kathy Hilton’s diamond ring. When the “grand dame of Beverly Hills” — as reunion host Andy Cohen named her — entered the room, the place lit up not only with Kathy’s sparkly scalloped cape and matching skirt, but her enormous diamond engagement ring. Lucky for us, Kathy gave a closer look a few times throughout the episode at her sparkler, giving us all the jewelry envy. See Kathy Hilton’s diamond ring When Kathy entered the…