Blue Amber (fluorescent)

Item Description

This is an attractive and hard to find example of Blue Amber from Indonesia. We have a friend overseas that was able to supply us with a small parcel of these eye-catching stones. These pieces are highly desirable due to the fact that they display a fantastic color change effect, showing an alluring BLUE color on the surface in sunlight, and a rich reddish-golden hue in indoor lighting, when backlit. According to GIA, this blue color is actually the result of fluorescence when exposed to UV sunlight, which makes sense because, these stones fluoresce a vivid blue color under LW UV light! You can compare this to the daylight fluorescence seen in Fluorite crystals from various localities in Weardale, England. Additionally the GIA website states that these Amber stones, "also showed the Usambara effect, the phenomenon in which color varies with the path length of light through a sample". I have been told that this is true Amber, not younger Copal, as the stones show no reacting to acetone. This piece is a beautiful polished specimen weighing 24.60 grams, with excellent internal gemminess, and beautiful fluorescence as you can see from the photos. A really cool piece for any fan of Amber or fluorescent material.