Siderite with Calcite from Dalnegorsk, Russia TF1830 trolleite The cavity is circled with

The cavity is circled with black Sharpie

One of the defining characteristics of Welo Opal is its exceptional play-of-color

rhodochrosite has been known since ancient times and has been utilized as an ornamental stone in jewelry and carvings

many of them with UV reactive petroleum inclusions

Solar Plexus

Siderite with Calcite from Dalnegorsk, Russia TF1830 trolleite The cavity is circled withSiderite with Calcite from Dalnegorsk, Russia Approx. Dimensions: 4x2x2. 5 inches Approx. Weight: 168 grams Locality: Nikolaevskiy Mine, Dalnegorsk, Primorskiy Kray, Russia Siderite with calcite specimens from Russia, specifically the renowned Nikolaevskiy Mine in Dalnegorsk, Primorsky Krai, are highly prized for their unique, often spherical, and complex, multi generational crystalline structures. These, mineral specimens from the Nikolaevskiy Mine