Item # BRS925103 Material: .925 Bali Sterling Silver Gemstones: Natural Opal Gemstones Size: 10x21 mm Size: 7 5/8 inch Place of Assembly: USA Stone Usage: ALL genuine stones! NO substitutes We set our natural gemstones in .925 Sterling Silver for what we call “Gorgeous with benefits!”Sterling Silver is used extensively with gemstones because it is able to both attract and retain unto itself those qualities that are emitted by the stone or crystal. Silver can draw out negative energies from the body while transferring the positive forces of the mineral, crystal or gem its set in. Opals come in a wide range of colors. White and green are by far the most common, while red and the fabled black opal are the rarest. Opal gemstone Opal is considered the birthstone of October. It is also the theme gift for the 14th and 18th wedding anniversaries. Mystical Magical and Healing Properties: In mystical circles, opal is considered a stone representing hope, innocence and purity. It has strong connotations of happiness, faithfulness, loyalty and confidence. We follow up with ALL our customers regarding their concerns.