Description
Rock Crystal Group from Brazil – Genuine Natural Clear Quartz Cluster
This Rock Crystal Group from Brazil is a naturally formed cluster of clear quartz points, selected individually for its clarity, structure, and overall mineral quality. The photographs show the exact specimen you will receive, offering a true representation of its appearance. As with all our minerals, this piece is 100% genuine and includes a Certificate of Authenticity. Clear quartz clusters from Brazil are prized for their strong crystal growth, natural transparency, and distinctive aesthetic features that reflect millions of years of geological development.
Geological Background and Formation of Clear Quartz
Clear quartz, known scientifically as silicon dioxide (SiO₂), is one of the most abundant and significant minerals in the Earth’s crust. It forms in a wide range of geological environments, but the finest crystal clusters typically develop in hydrothermal veins and pegmatites—mineral-rich cavities where silica-laden fluids slowly cool and crystallise. This gradual cooling allows quartz to grow into well-defined prismatic points, often forming clusters with multiple intergrown crystals.
Brazil’s quartz fields, particularly in Minas Gerais, are among the most productive and renowned on Earth. These regions are characterised by ancient geological activity involving tectonic uplift, volcanic processes, and long-term hydrothermal circulation. Over millions of years, silica-rich fluids moved through fractures in the host rock, depositing quartz in open cavities. As the fluids cooled, quartz crystals began to grow, sometimes forming large, complex clusters like the Rock Crystal Group offered here.
Crystal Habit, Structure, and Natural Features
Clear quartz belongs to the trigonal division of the hexagonal crystal system. It typically displays elongated six-sided prisms ending in sharply terminated, multi-faceted points. This Rock Crystal Group features multiple naturally formed points rising from a shared base, showcasing the classic quartz cluster habit. Each point may contain internal features such as light-reflecting veils, subtle inclusions, or faint growth lines formed during layering events within the hydrothermal environment.
The clarity of the quartz can range from near-transparent to milky white depending on microscopic inclusions or trapped air during formation. Brazilian quartz is especially known for its high clarity and strong prismatic definition. When viewed under light, this specimen may display internal reflections, rainbow flashes caused by internal fractures, or natural optical distortions that enhance its visual appeal.
The external faces of the crystal points show natural growth textures including horizontal striations and sharply defined edges. These features highlight the mineral’s slow and stable crystallisation over geological timescales.
Mineralogical Significance and Global Importance
Clear quartz is one of the most studied and valued minerals worldwide due to its crystal symmetry, chemical purity, and abundance. Its presence in geological formations often indicates long-term hydrothermal activity and stable mineralisation conditions. Quartz crystals like this Rock Crystal Group demonstrate the natural beauty and complexity of silica mineralisation and serve as excellent examples of mineralogical processes.
Brazilian quartz, in particular, is renowned for producing exceptionally well-formed clusters that are valued by collectors, educators, and enthusiasts. The strong development of individual points combined with their mutual arrangement in a cluster makes these specimens ideal for display and study.
Authenticity and What You Receive
You will receive the exact Rock Crystal Group shown in the photographs. Full sizing information is visible in the images for complete accuracy. Each specimen is hand-selected for its natural form, clarity, and unique crystal arrangement. A Certificate of Authenticity is included with every piece, confirming it as a genuine natural clear quartz cluster from Brazil.
This Rock Crystal Group is perfect for collectors, educational displays, interior décor, or anyone who appreciates the geological beauty of naturally formed quartz crystals shaped over millions of years.






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