Listing ID #7317858
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| Straight line agate is a rare formation of agate that exists in distinct geometric shapes with straight lines forming triangles and quadrilaterals. These straight lines are not representative of the crystal's cleavage property but rather reflect the void-walls from which the siliceous groundwater solidifies. Agate, a microcrystalline-quartz mineraloid, forms over thousands of years inside voids of rocks containing silica-rich groundwater, resulting in colorful displays due to various environmental factors like rock geochemistry, groundwater content, and pH levels. Agate is a type of chalcedony with physical properties like variable color, waxy-flat luster, and a Mohs hardness scale of 6.5 to 7.0. It is not categorized as a mineral but as a mineraloid due to its amorphous physical properties and geochemical composition. Agate is found worldwide and has been used for centuries in jewelry and decorative objects due to its unique banding patterns and colors |
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