Dendritic opal from Utah showcases finely detailed splays of black dendrites in a caramel - colored common opal.  Nature at its finest. This material will make magnificent scenic cabs.

Origin:  Unknown

Dimensions: 5" x 4.25" and approximately 6.7 mm thick.  Weight = 214 grams. 

Shown wet.  Not polished. Known flaws are shown as white lines in the last picture frame.