the portico dungeon. enter, go either clockwise or counterclockwise around the perimeter and down each ramp, then when you're back near the entrance, leave and re-enter. this is the best place to avoid butting heads with anyone else who may be looking for them since it's a dungeon and you don't need to realm hop. -eli and crew
Where is the portico dungeon? Yeah Golden Pearls and the Pearls are hard to find, more than sunstone actually unless you run out of gold.
You can enter the portico from the celestia base camp.
Also when taking etherchaos's advice, skip the ramp in the back right of the dungeon, doesn't have any spawn points for reagents. Oh and don't forget to look behind the pile of rubble on the left side of the dungeon, sometimes you can find a pearl there.
you have to have access to the portico to enter. if not, have a friend who does port you in. and when finished your run, dont just leave. either log out or change realms so the dungeon will reset with a whole new batch of reagents to grab :D
best place is stormriven it has three spawn points, next to clams. i suggest this place because it has a high chance of getting golden pearls out of normal pearls and also has silver chests and other reagents :-)