Polished Dendritic Opal DO242 rare 50 mm x 50 mm

50 mm x 50 mm  x 30 mm

OJ170  A rough rock

Dimensions at widest points approximately 80 mm x 65  mm x 8 mm thick

Dimensions at widest points approximately 110 mm x 70 mm x 9 mm thick

iron-rich silica rock from the Marble Bar Chert Member (Warrawoona Group) of Western Australia

Polished Dendritic Opal DO242 rare 50 mm x 50 mmDO242 Dendritic Opal rough rock, cut and polished on one side with a natural back. This colour variation also referred to as "Merlinite". Dimensions at widest points approximately 225 mm x 95 mm x 75 mm thick Weighs 1,818 grams From our mining claims near Ora Banda in the Eastern Goldfields region of Western Australia.