Australian Green Opal 10mm Round Faceted - 15-16 Inch - CLEARANCE chips which may contain iron oxide

which may contain iron oxide

iron or manganese impurities within the stone

but also for industrial purposes from watch gears and scientific instruments to sandpaper and other abrasives

African Jade is a complex Calcium Aluminum Silicate and is a Nephrite Jade

Australian Green Opal 10mm Round Faceted - 15-16 Inch - CLEARANCE chips which may contain iron oxideAustralian Green Opal is a variety of Common Opal which is a mixture of Opal and nontronite. Common Opal is generally opaque, without the play of color present in more precious varieties, however it does exhibit a lustrous sheen referred to as opalescence. Green Opals are believed to provide energy and speed recovery from illness, exhaustion and mental angst.