What this green mineral could be? it's harder than glass : r/rockhounds

Identify this rock/mineral?, Page 1

Found this about 20 years ago - Odd green crystal and stone is incredibly hard. : r/whatsthisrock

Geology: What are the most interesting looking rocks and minerals? - Quora

Michigan Stones Archives - The Snob Blog

Great Lakes Rocks & Minerals, Found some beauties in the Keweenaw Peninsula

Metamorphic Rocks: Pictures, Descriptions & Identification – Rockhound Resource

What this green mineral could be? it's harder than glass : r/rockhounds

A close look at antimony, stibnite, and stibiconite with comments on contemporary mineral collecting. — Exotica Esoterica

Buy Exquisite Moldavite Museum Quality Synergy 12 Stone Online in India

Agate/Thing I found in Washington. Any idea what the green is? : r/ rockhounds

Fluorescent Minerals, I have some Sodalita several locations in my collection but perhaps this is one of the most beautiful for his tenebrescent so dramatic after exposure

Why can some minerals like quartz have obvious inclusions, but not others? - Quora