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The Ingyin stone has to be cut according to shape and size of the beads you are going to make. Then, the pieces of stones are put on a bamboo stick which is closed at one end and a grinder is used to grind the stone. Later on, a hole is bored through the stone by using a diamond tip driller. It is a traditional method. And then, the finished beads are polished with colouring powder on a lapidary-machine installed with a colouring touchstone.
White and black colours are used in this process. White colour can be obtained from quicklime, sand soap powder and borax powder, and black colour from ammonium-chloride, yellow orpiment, carbon and sulphur. Only breast milk is used to dissolve and seep the colour solution through the stones.
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