\[ **BT: [[Earth#Earth’s constituent rocks and minerals]]** ] --- ## amber Note: amber isn’t really a rock or mineral. It’s fossilized tree resin. Amber has been appreciated for its colour and natural beauty since the Neolithic times, and has been worked as a gemstone since antiquity. Amber is used in jewellery and as a healing agent in folk medicine.[^1] - see also: [[decoration and design#jewellery]] [^1]: ‘Amber’, Wikipedia, last edited 17 March 2025, 19:19 (UTC), <https://en.wikipedia.org/wiki/Amber>.