Australian Dendritic Opal Rock slab 63

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: 3.75" x 3" and approximately 6.1 mm thick.  Weight = 84 g.  Shown wet.  Not polished.  Flaws are shown as white lines in the final picture frame.