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Double refraction
with a Mohs hardness of only 2
Pyrite Sphere
See the first photo for fluorescence
also known as bertrandite
Faden Quartz from Morocco TF1963 atlantisite Double refractionFaden Quartz from Morocco Approx. Dimensions: 4x2. 5x2. 25 inches Approx. Weight: 124 grams Locality: Alnif Cercle, Tinghir Province, Draa Tafilalet Region, Morocco This faden quartz specimen is characterized by a visible white thread or line running through the crystal, formed as the crystal repeatedly healed itself during growth. These internal growth lines record episodes of breakage and regrowth, giving faden quartz a distinctive internal
