Blue Amber is a rarest variety of amber in the world, Amber is a resin that exhibits a blue coloration natural daylight or daylight-equivalent lighting. Blue color observed in the amber from the Dominican Republic and Indonesia is actually fluorescence sparked by ultraviolet (UV) light. When natural light hits blue amber on a white surface, the light passes right through, and is refracted by the white surface given you the base or shade of the amber it’s true color of the base of the amber. The base can range from white, yellow, orange, reddish to dark brown. The result is the slight blue hue of blue amber. When the same daylight or daylight-equivalent lighting hits the amber on a black surface, the light is not refracted by the black surface, but by the actual amber. Hydrocarbons in the blue amber changes the daylight or daylight-equivalent ultraviolet light down in frequency, resulting in the glow of blue amber. This phenomenon can also be applied to green and red Amber.
There’s no absolute understanding on how blue amber got its color Although there are several theories about the origin of Dominican blue amber, there is a great probability that it owes its existence to ingredients such as anthracene as a result of ‘incomplete combustion’ due to forest fires among the extinct species Hymenaea protera trees about 25 to 40 million years ago. One could understand the same applied to the Indonesian blue amber.