These are the most popular Holy Priest trinket combos. The most popular combo is Diamantine Voidcore and Loom'ithar's Living Silk with 36.0% usage.
BiS Best in Slot data provided by Wowhead's Holy Priest Best in Slot Guide.
These are the most popular Holy Priest trinkets. The two most popular trinkets individually are Loom'ithar's Living Silk with 88.0% usage and Diamantine Voidcore with 36.0% usage.