Extraordinary Mineral Specimen - Pink Tourmaline on...

Magnificent natural specimen of pink tourmaline in a white quartz matrix, from Brazil, one of the world's historically most important areas for the production of collectible-quality tourmaline. The specimen presents itself as a solid block of white quartz matrix, traversed by and covered with numerous prismatic pink tourmaline crystals. The crystals show the typical elongated, striated habit of tourmaline, with parallel and sub-parallel orientations in several zones of the specimen. The contrast between the vivid pink of the tourmalines and the milky white of the quartz creates a striking, elegant overall appearance that is also clearly legible from a mineralogical point of view. The surface of the specimen preserves a remarkable richness of detail: elongated crystals, natural break surfaces, partial terminations, small crystal aggregates, and zones where tourmaline appears disseminated through the matrix in a more granular way. This alternation makes the piece interesting to observe from multiple angles, because each side tells a different phase of crystallization. Pink tourmaline generally belongs to the group of elbaite tourmalines, a lithium- and aluminum-rich variety that can develop a wide range of colors, from green to blue, from yellow to red-pink. The pink hues are linked to the presence of chromophore elements such as manganese, capable of imparting to the crystal those warm, intense shades that make these specimens particularly sought after. Samples like this form mainly in granite pegmatites, rock environments derived from the final cooling stages of silica-rich magmas, with water and rare elements. During this final phase, residual fluids concentrate elements such as lithium, boron, aluminum, sodium, manganese, and iron. It is precisely the presence of boron that makes tourmaline formation possible, a chemically complex mineral that is highly sensitive to the conditions of the environment in which it grows. In pegmatites, crystallization often occurs in cavities or fractures where the mineralizing fluids have space to deposit well-developed crystals. The white quartz represents the main siliceous matrix, while the tourmaline develops in prismatic crystals, often longitudinally striated, which can grow embedded in the quartz or emerge from the matrix with pronounced relief. In this specimen one can observe this geological relationship: pink tourmaline is intimately associated with quartz, a sign of growth within the same pegmatitic system. Brazilian pegmatites have yielded crystals of exceptional quality, both gemological and mineralogical, and continue to be a fundamental reference for collectors, scholars, and enthusiasts.

Utropspris:SEK 15,576.32

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