Polished Green Opal rock GRN95 Marramamba Tiger Eye Dimensions at widest points approximately

Dimensions at widest points approximately 140 mm  x 80 mm wide x 8 mm thick

RFJ132  Rhyolite (Rainforest Jasper) rough rock

It weighs 559 grams

Weighs 393 grams

A bulk assortment of different sizes

Polished Green Opal rock GRN95 Marramamba Tiger Eye Dimensions at widest points approximatelyGRN95 Green Opal & Magnesite rough rock, cut and polished on one side with a rough, naturally weathered back Dimensions at widest points approximately 190 mm x 100 mm x 90 mm thick Weighs 1,092 grams Green Opal occurs at a location south of Kalgoorlie in the Eastern Goldfields of Western Australia. The green colouration is caused by traces of nickel and or chromium. Sometimes it exhibits striking contrasting veins of magnesite.