Pressed amber jewelry from Lithuania is crafted by taking small pieces of genuine amber, often remnants from larger carving or extraction processes, and compressing them together under high pressure and heat with a binding agent. This process creates a solid piece of amber that can then be shaped into beads, pendants, or other jewelry components. While it's still considered real amber, pressed amber is generally less expensive than naturally formed, solid pieces of amber due to the utilization of smaller fragments and the manufacturing process.