If you see flint stone in your dream, it can symbolize something significant. It indicates that you are searching for something that will be beneficial for you or hoping for a particular event to occur. This dream suggests that your efforts and hopes will be fulfilled. If you strike something with the flint stone, it signifies that your endeavors will be successful and your expectations will be met.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Flint stone" (page 170).
In a dream, a flint stone means searching for something that could bring profits or hoping for something to happen, and both will take place. If one sees himself striking a flint stone with a piece of steel to produce fire for cooking or for light, and ifhe sees the sparks coming from them in a dream, it means that he will take advantage of his friendship with someone in authority who is rock hearted to help him overcome his poverty and to make his life more manageable. The flint stone in a dream also represents the rock hearted man, and the steel represents his might. On the other hand, if one strikes a flint stone with a piece of steel and produces sparks from them in his dream, it means that he will witness an awesome fight between two rock hearted and cruel people. Striking a flint stone in a dream also means marriage of an unwed person. If a woman sees herself striking a flint stone with a piece of steel, and if she can produce sparks in the dream, it means that she will beget a son. If a spark starts a fire in the dream, it means that one's wife will become pregnant or perhaps it could represent a fight between the husband and the wife, or a fight between two partners. If the sparks burn one's gown in the dream, it means that harm will affect that house and such harm will bring about losses in money, family honor or bodily injury. If the sparks burn a notebook in the dream, it means deviation from God's path.
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.