This time I got something special for You: A stunning piece of fossilized resin (amberized wood) from Sumatra, Indonesia, showing deep brown to golden hues and intense blue fluorescence under UV light. This ancient material formed millions of years ago from tropical trees, beautifully preserved in volcanic sediments. The surface displays natural textures of fossilized wood, while internal areas reveal amber translucency under strong light. A rare and fascinating collector’s piece bridging geology and paleobotany. Strong fluorescence under UV light. Pictures were done with strong artificial light. Was hard to take pic, but when You will take this piece outside in sunny day You will see that it's blue. Blue color is visible in UV light and in strong sunlight. Condition as on pictures Great collection specimen much better in person. Not Coba. Feel free to do laboratory tests.