Australian Dendritic Opal Rock slab 69

Australian Dendritic Opal is a glassy opalite that is filled with very intricate black dendrites on a variety of background colors.  The semi-transparent opalite material takes a brilliant polish to set off the distinctive feathery dendritic pattern.  A challenging material to work with as it tends to be a bit brittle, the extra effort to make a finished piece is well worth it. Origin:  Australia Dimensions: 5.5" x 3.5" and approximately 6.6 mm thick.  Weight = 125 g.  Shown wet.  Not polished.  Flaws are shown as white lines in the final picture frame.