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which can be removed with isopropyl alcohol or mineral spirits
Weight: 101
about 5000-3500 years ago
The Tyndall effect is also the reason why blue chalcedony appears yellow or brown when strong light shines through it
where silica-rich fluids slowly deposited quartz into open cavities under stable
Faden Quartz from Morocco TF1967 guerrero amethyst which can be removed withFaden Quartz from Morocco Approx. Dimensions: 4x3. 5x2 inches Approx. Weight: 206 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 structure
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