Is buying a stone called "Sulaimani" with the intention of attracting love, and then throwing it away after two weeks without using it, considered minor or major shirk?

Indeed, hanging stones, rings, and amulets—such as beads and charms—with the intention of bringing benefit or warding off harm is minor shirk (definition) (polytheism) and is forbidden. This is based on what was reported from the Messenger of Allah, peace and blessings be upon him: "Verily, incantations, amulets, and love-charms are shirk." This is considered a means to shirk and a weakening of the intellect, unless a person believes that these things act independently without Allah's permission, in which case it becomes major shirk.