Question: is amber used for anything in breath of the wild?
Answer: Amber is used in Gerudo Town to craft Amber Earrings at Starlight Memories. According to the earring's description, it can harness the power of the land to increase defense. Link can also use amber to upgrade Armor at a Great Fairy Fountain. It is used to upgrade the Hylian Hood, Tunic and Trousers set.