This is a wonderful blue dendritic opal, 2 oz,1.75” by 1.7” by 1.4” shown as it was found in Kosovo and really is glassy and opalescent … more so than the usual! It looks deceptively dark, but with close examination, you see the shades of blue against the veritable garden of dendrites! One edge is the natural unbroken rock and the opal is truly amazing.

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Glassy Merlinite Dendritic Blue Opal Rough from Kosovo