Ethiopian Black Opal Colour: Multi Colour Stone Size: 8 x 6 mm Bracelet length: 19 cm 925 Sterling Silver, White Gold plated Weight: 11,48 grams = 57,4 ct. unused, like new Top Quality Insured shipping with tracking number Lamp light condition Opal is regarded as stone of protection. It is believed to act as a shield against other people’s negative thoughts and energies. It is also believed that opal promotes security and calmness. It is good for easing stress and depression, for calming restless thoughts and mind. Wearing opal helps to fall in love with life.