Blue Amber (fluorescent)

Item Description

Here we have a wonderful polished specimen of the rare and sought after Blue Amber from Indonesia. Amber is an organic material that is well-known in mineral/gem world due to its obvious beauty along and notable transparency. Nearly everyone is familiar with the material from the Baltic Sea, the Dominican Republic or Colombia, but these pieces from Indonesia are much rarer and more desirable in my experience. We are fortunate that we have a friend overseas that was able to supply us with a small parcel of these eye-catching specimens. These unique and alluring pieces are quite alluring due to the fact that they display a fantastic color change effect, showing a RARE 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 tumbled/polished specimen weighing 30.69 grams, with good internal gemminess when backlit, and beautiful fluorescence as you can see from the photos. A really cool piece for any fan of Amber or fluorescent material.