Evident in these experiments is the individual shapes each crystal displays, and the unpredictable direction the growth of the crystal has. As a result of their trigonal crystal structure rubies grow in a hexagonal shape. When incorporating gemstone growth into the jewellery design process, the artist has to consider that the gemstone will grow into a shape that, in the processes applied, cannot be pre-determined, inviting an element of uncertainty. The unpredictability of the growth, in direction and through the appearance of facets determined by the material’s crystal structure, means that each time a seed is grown a different outcome will be materialised. Aligning with bio-design, this co-creating with nature challenges the notion of man-made gemstones as synthetic.