Hyacinth, facing sardonyx in the ring of the twelve gemstones, is a marvellous fiery red, totally transparent stone. In chemical terms it is zirconium silicate. Zirconium is an element with an enormous light capacity. In the previous century zirconium light was used in the same way as magnesium light. At the same time, zirconium is an element with great resistance (it is used in nuclear plants) and a good transparency: it is the raw material for production of enamel.
hyacinth has a relation to light, but in a totally different way than
chrysolite. The latter is more connected with sun-processes, the former
has the light in itself, even to the extent to produce some radioactive
The capacity to produce light from inner sources may in a way be considered as an image of the capacity of imagination.
relation between sardonyx as the gemstone of inspiration and hyacinth
as the gemstone of imagination is of course clear, also in the sense
that imagination (the transparent hyacinth) has a closer connection to
our thinking, and inspiration (the practically untransparent sardonyx) is
distinctly linked to the forces of the will. The way which leads to
imagination and from imagination to inspiration is the way which makes
our one-sided view of the world whole again. Between hyacinth and
sardonyx there is the way of wholesomeness. The Bible uses the word
“soteria”, translated by salvation.
- Dr. Simon van der Heide