Check the listing for details. Lithium High Pure 99.9% Granules Metal Element LI 3. Listed at 1183.05 USD. Lithium with atomic number 3 is a versatile element. In our online shop Auremo you will only find high-quality lithium at affordable prices. It is used in aircraft construction and in some batteries. It is also used for mental health: lithium carbonate is often used to treat bipolar disorder and helps stabilize the mood swings caused by the illness. Lithium is a special metal in many ways. It is light and soft - so soft that you can cut it with a kitchen knife and so light that it floats on water. It is also solid over a wide temperature range, with one of the lowest melting points (180 °C) of all metals and a high boiling point (1342 °C). It reacts violently with many elements and compounds. It reacts by generating heat. Lithium and its compounds give the flame a crimson color that can be.