I have a passion for amber and I have few but beautiful pieces of jewelry. Amber is fossilized tree resin which is used as an ingredient in perfumes, as a healing agent in folk medicine, and as jewelry. As well as the usual yellow-orange-brown that is associated with the color "amber", amber itself can range from a whitish color through a pale lemon yellow, to brown and almost black. Other more uncommon colors include red amber (sometimes known as "cherry amber"), green amber, and even blue amber.
The pics below show green amber jewelry I bought on the Greek island of Santorini.