sugilite Wolframite South African gem Shudulai square

It is also a lucky stone for the birthday of February in the Gregorian calendar. Suji stone is a rare gem, known as the "South African gem", produced in the small rock beads of aegirine syenite. Its main component is silicon oxide, and contains various metal elements such as potassium, sodium, iron, lithium, etc. In 1944, Mr Kenichi Sugi discovered it, so he named it after him. However, it was not until 1979 that the collapse of part of the Wessel manganese mine led to the discovery of sapphire-grade Sujite in South Africa. The quantity found at that time was about 5 tons, of which 360 kg could be used as gemstones.