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amazonite exhibits a hardness of 6 to 6
Colombian Lemurian (Optical Quartz)
Double refraction
This material has historical significance for its use in sighting equipment for bombardiers and gunners during wartime
Weight: 1340 grams
8" Septarian Slab DS2235 marquise amazonite exhibits a hardness of8" Septarian Slab Approx. Dimensions: 8x7. 75x0. 5 inches Approx. Weight: 816 grams Locality: Mexico Slab stand is included. Septarian, a distinctive sedimentary rock, forms through the combination of calcite, aragonite, and limestone with organic matter and minerals such as iron sulfide. It develops in concretions within sedimentary deposits, often found in regions with ancient seabeds, notably in Utah, USA, Madagascar, and Morocco. These concretions
US$ 36.00
US$ 90.00
US$ 105.00