Why does amber stone change color?

[drfinejewels]

Amber occurs in a range of different colors. 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 uncommon colors include red amber (sometimes known as “cherry amber”), green amber, and even blue amber, which is rare and highly sought after.



Yellow amber is a hard, translucent, yellow, orange, or brown fossil resin from evergreen trees. Known to the Iranians by the Pahlavi compound word kah-ruba (from kah “straw” plus rubay “attract, snatch,” referring to its electrical properties), which entered Arabic as kahraba’ or kahraba, it too was called amber in Europe (Old French and Middle English amber). Found along the southern shore of the Baltic Sea, yellow amber reached the Middle East and Western Europe via trade. Its coastal acquisition may have been one reason yellow amber came to be designated by the same term as ambergris. Moreover, like ambergris, the resin could be burned as incense. The resin’s most popular use was, however, for ornamentation easily cut and polished, it could be transformed into beautiful jewelry. Much of the most highly prized amber is transparent, in contrast to the very common cloudy amber and opaque amber. Opaque amber contains numerous minute bubbles. This kind of amber is known as “bony amber”

[pculiar]

Care to explain how this is a ‘Tip for sellers’?