From the RuneScape Wiki, the wiki for all things RuneScape
Tele-orbs are used in the
Fist of Guthix minigame. When the orb is broken, the player is transported to the middle of the playing field, once broken, you cannot get it back unless you start a new game. At the beginning of the game each player receives one of these along with
Bandages, 1,000
elemental runes and 300
catalytic runes. If you try to break it while in the waiting room, you will receive a message stating that you should save it for when you really need it.