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The contrast between the lustrous quartz crystals and rich iron mineralization creates a bold
it forms from the weathering of other iron minerals and appears in colors from yellow-brown to black
Sparkling druzy quartz crystals shimmer across a rich hematite matrix in this eye-catching Arkansas specimen
If they are held up to the light
this transparent crystal is prized for its clarity and gentle color and was found in Afghanistan
Shark Tooth in Matrix (Otodus Obliquus) | Morocco | Eocene marine life The contrast between the lustrousThe Otodus obliquus shark tooth fossil in a matrix is a spectacular Eocene era specimen. These 50 54 million year old teeth are distinct for their triangular crowns and prominent side cusps. They are most famously sourced from the phosphate mines of the Outland Abdoun Basin in Morocco. This item is 2. 5 x 2 and weighs 3. 9 oz
