Moon stone ring being made in Sri Lanka

From the archive record

Worker cuts the metal sheet into small pieces then he heats small metal piece into the fire using a bushy flame to give it a shape Usually the metal is heated to soften it and to obtain a desired shape. After that he gives a shape of ring to the metal sheet, later he fixes a moonstone on it . Finally the ring is ready to wear. Moonstone, considered to be the most valuable variety of feldspar, is the opalescent variety of orthoclase (an opaque to transparent potassium feldspar). Its schiller or adularescence is caused by the intergrowth of two different types of feldspar, with different refractive indexes. Like labradorite, it has an opalescent quality, caused by the reflection of light from the internal structure. Moonstone is usually whitish-blue, but can be colorless, yellow, orange, gr