Top colors in this natural Australian matrix opal from Andamooka area. One of the best, full of colors, very well covered and not directional stone. Red dominant with blue and green. Piece which is impossible to ignore, will make you shine bright! Opal is 12 carat (2.4 g), measuring 24x17x4 mm in size. Total pendant weight (opal + silver) is 3.25g. Setting and bail are 925 stamped silver, stamp is located on a bail. 50cm black twisted leather strap is included. Treatment: carbonized and resin stabilized. Andamooka is famous for its matrix opals - when opal fills gaps in porous host material. Is getting more and more popular, as it can produce large stones with very good colors, and usually is less fragile than solid opal. Australian opal is sedimentary, formed slowly over millions of years. It's is not affected by contact with liquids, is stable and can last forever if takes care of.