Geode of agate on round brass base. Mexico
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Crystal with prehistoric water on brass machinery
Golden Agate slice 1.4 Kg on brass base
Eroded Agate 640g on brass base - Poland (Wistoka river)
Fluorite ball -Marienschacht Mine , Wölsendorf, , Germany-
Boulder Opal (two parts) of 345g on black base -Australia-