I just came across some photos from the production in the 1990's. Enjoy! The water soaked rape seeds are draining. Saturated rape seeds in the tumbler. Christer Johansson is controlling the size of the growing marble embryos. The marbles are growing. The size of the marbles is measured with a primitive wooden measuring device. When ten marbles exactly fill the tray, they are the right size. Marbles, straight from the tumblers, are being dried and hardened on this large rack. Dry and hardened marbles are being kept in a wooden crate before coloured. Christer Johansson is mixing the colour pigments. Finished marbles! 14 steps in the making of a Swedish stone marble; From seed to finished product.