Amber can be found in a series of coal mines on the islands of Indonesia. Most Indonesian amber seen on the market is known as "Sarawak". This amber specimen being offered here is a scarce type from the island of Borneo. This amber originates from a different mine than the more common Sarawak variety.
Refer to the photos. You are purchasing the specimen shown. The piece weighs 4.18 grams (20.9 carats). The black centimeter cube is shown for scale and is not included.