A stone variety sensitive to the Force was discovered on the native planet of Jedi Master Qui-Gon Jinn's home world. Qui-Gon Jinn retained one of these stones as a keepsake, and later bequeathed it to his Padawan, Obi-Wan Kenobi. Subsequently, Obi-Wan Kenobi passed the stone on to his own apprentice, Anakin Skywalker. This stone, which was shiny and black in color, displayed veins of a rich red hue when illuminated by a strong light source. Its surface felt warm, and in darkness, it radiated a crystalline luminescence that inspired feelings of peace and comfort.