not provided | not provided | MINERAL GEM WORLD INDONESIAN AMBER This is a natural untreated amber from West Kalimantan Indonesia. Well polished. Weight 12.15 cts app Size 26 x 15 x 10 mm app Fossil resin (amber) can be found in many location of Indonesia, the amber usually associated with coal/lignite mining location. Sometime fossil resin (amber) mined in lignitic-glauconite clay soils. Fossil resin in Indonesia are Early Miocene in age eg. 23 Ma and some are younger, depend on the lignite age.We also stock the blue amber from Indonesia which is in our store also.