{"product_id":"amethyst-druse-sugaring-formation-mit-sekundarer-calcit-ausbildung-30-6-kg","title":"Amethyst Geode, Sugaring Formation with Secondary Calcite Development - 30.6 kg","description":"\u003cp\u003eThis 30.6-kilogram amethyst geode from Brazil features a particularly finely developed sugaring structure on the inside. Countless small crystal points stand closely together, creating a vibrant, sparkling surface with noticeable depth. The light uniformly refracts in the micro-crystals, making the structure appear calm yet rich in detail. \u003cbr\u003eIn the upper area, light calcite crystals have also formed. This secondary mineralization adds another dimension to the piece and shows that the cavity did not grow in just one phase. The contrast between purple amethyst, cream-colored calcite, and the fine chalcedony rim tells a story of different geochemical conditions within the same rock body. \u003cbr\u003eThe vertical opening reveals a compact, self-contained crystal landscape. Despite its moderate size, the formation appears powerful and structured. The combination of dense sugaring formation and mineral diversity gives this piece a distinctive radiance that clearly sets it apart from purely monochrome geodes. \u003cbr\u003eGeologically, the process began with the lining of a volcanic cavity by microcrystalline quartz, which remains visible as chalcedony. In a later phase, iron-bearing quartz crystallized into amethyst, forming the purple geodes. Under altered chemical conditions, calcite eventually formed, depositing on parts of the existing structure. Today's surface documents these chronologically separate growth phases in a single object. \u003cbr\u003e30.6 kilograms of mineral development with a fine crystal structure and visible multi-phaseness. \u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eHeight: 78cm\u003c\/p\u003e\n\u003cp\u003eWidth: 32cm\u003c\/p\u003e","brand":"Amethyst.de","offers":[{"title":"Default Title","offer_id":43017619472474,"sku":"2686B","price":3000.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/0968\/5082\/files\/0F1A0226.jpg?v=1773067200","url":"https:\/\/amethyst.de\/en\/products\/amethyst-druse-sugaring-formation-mit-sekundarer-calcit-ausbildung-30-6-kg","provider":"Amethyst.de","version":"1.0","type":"link"}