Red topaz is a type of semi-precious gem. It can be either obtained using the Mining skill from Shilo Village's gem rocks, the gem rocks in the Lunar Isle essence mine, a random gem rock during the Tai Bwo Wannai Cleanup minigame, from panning at the Digsite near the River Salve, a possible reward from the Gnome Restaurant minigame, a possible find from Mobilising Armies, a possible loot from Dorgesh-Kaan Chests, or buying it off another player.
Red topaz can be cut with a chisel by a player with 16 Crafting although there is a high chance that the player will accidentally crush it into crushed gem. Successfully cutting an Uncut Red Topaz grants the player 25 Crafting experience, but if they crush the gem they will receive only 6.3 Crafting experience.
At level 60-61 crafting there is about 31% chance that the red topaz will be accidentally crushed (in a test, 350 out of 1306 were crushed at level 60-61 crafting).
At level 84 crafting there is roughly a 10-11% chance that the red topaz will be accidentally crushed (in a test, 260 out of 2000 were crushed at level 84 crafting).
Following another small test of 100 uncut red topazs with a Crafting of 92 only 5% were crushed. Further testing is needed.
Red topaz is not used in the creation of jewellery, but can be cut into red topaz bolt tips for use in creating red topaz bolts.
Cut red topaz may be sold to Gabooty's Tai Bwo Wannai Cooperative for 60 Trading sticks, uncut may be sold for 12.
Red topaz exists in RuneScape Classic, it is also used to create a Red topaz machete, which fulfils a medium Karamja Task.