Amber is fossilised tree resin, valued for its warm colour, natural clarity and the ancient life it can sometimes preserve. Most collectable amber formed over millions of years, with well-known examples such as Baltic amber dating to around 34–44 million years ago, and some Cretaceous ambers being far older at around 99 million years old. As sticky resin hardened and fossilised, it occasionally trapped tiny insects, plant fragments or air bubbles inside, offering a remarkable glimpse into ancient ecosystems.
