QuestEx Gold & Copper Ltd. engages in the acquisition, exploration, and development of mineral properties in Canada. The company explores for gold, silver, and copper deposits. Its principal assets include North ROK, Coyote, KSP, Kingpin, Castle, and Sofia properties located in British Columbia. The company was formerly known as Colorado Resources Ltd. and changed its name to QuestEx Gold & Copper Ltd. in September 2020. QuestEx Gold & Copper Ltd. was incorporated in 2009 and is based in Vancouver, Canada.