Give the stones to Gatekeeper Tamil to get a Gatekeeper Charm x2 that is good for free teleport to Gludin from the Orc Village. By l2hub
Steps from the game client
Collect Starstones
Gatekeeper Tamil says that in order to complete his teleport magic, he needs the aid of the totem spirit of the spider. To get this, he must make regular offerings. He asks you to collect 20 starstones from the greystone golems. He will reward you with a token for a free teleportation to Gludin.