Premium Afghan Lapis Lazuli Sphere with Pyrite...

Royal Blue Natural Coloured Sphere with Pyrite and Calcite inclusions — This specimen features a notably large and finely crafted lapis lazuli sphere, the result of processing an metamorphic aggregate composed mainly of lazurite, associated with calcite, pyrite and other minor silicates. Its geological formation is typical of contact metamorphic deposits, where carbonate rocks have been altered by hydrothermal fluids rich in sulfur, iron, and aluminum, responsible for the genesis of lazurite and the other minerals found alongside it. Visual inspection reveals an intense, deep ultramarine color, with areas reaching the characteristic 'royal blue'. The matrix is crisscrossed with white calcite veins, creating a distinctive color contrast and natural patterns on the glossy surface. Finely dispersed golden pyrite inclusions, sometimes aggregated into small streaks, add a brilliant sparkle, giving the specimen superior aesthetic quality and enhancing its natural beauty. The origin of this magnificent lapis lazuli is Afghanistan, in particular the famous Sar-e-Sang mines in Badakhshan province. This region is historically recognized as the oldest and most prestigious source of lapis lazuli in the world, with mining dating back over 6,000 years. The extreme geological conditions of this mountainous area have favored the formation of exceptionally high-quality lapis lazuli with vivid color, making Afghan specimens among the most sought after by collectors. The aesthetic quality of this sphere is especially high, thanks to skilled polishing that enhances the color vitality and the luster of the pyrite, making each calcite vein a decorative element rather than a flaw. The perfect spherical shape was achieved with meticulous attention to detail, ensuring impeccable symmetry and a smooth, glossy surface free of significant imperfections that could compromise its value. The piece is in excellent condition, with no evident alterations or surface damage. Its robustness and intrinsic hardness (5-6 on the Mohs scale) ensure durability over time. This item does not require complex supports and is ready to be displayed as a centerpiece in a mineral collection or as a refined decorative object, ideal for those who appreciate the intrinsic beauty of natural gems. The collecting value of a lapis lazuli sphere of this size and quality, sourced from Afghanistan, is substantial. Specimens of this caliber, combining a deep color, well-distributed pyrite inclusions, and balanced calcite veining, are sought after by enthusiasts and investors. It stands out from smaller specimens for its substantial presence and the richness of mineralogical details, making it a unique and highly valued piece in the field of ornamental mineralogy.

估價:$477.25

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