Strong Joint Stone

Vendor

Base value 1s (carries a vendor price; bought or sold as a reagent).

Crafting

Not craftable.

Gathering

Not a gathered material.

Dropped by

Loitering Stone Golem	level 15
Thrashing Stone Golem	level 16
Frenzied Sandstone Golem	level 17

Note: the monster level tells you the zone tier where it is found; exact spawn coordinates are not published in the game data. See the World Atlas for zone level bands and Dungeons & Raids for instanced drops.