Description
Natural Rock Crystal Quartz – Brazil
This striking Rock Crystal Quartz specimen from Brazil is a classic example of natural clear quartz, prized for its clarity, structure, and geological significance. Sourced from the renowned mineral-producing regions of Brazil and presented from the Alice Purnell Collection, this is a genuine specimen that includes a Certificate of Authenticity lifetime guarantee generic card. The photographs show the exact crystal you will receive. Please refer to the images for full sizing details.
Mineral Identification and Crystal Structure
Rock Crystal is the colourless, transparent variety of Quartz, composed of silicon dioxide (SiO₂). Quartz crystallises in the trigonal crystal system and commonly forms six-sided prismatic crystals terminating in six-sided pyramids. Well-formed Brazilian specimens are especially valued for their sharp terminations, glass-like lustre, and excellent transparency.
Quartz has a Mohs hardness of 7, making it durable and suitable for long-term display. Its conchoidal fracture and vitreous lustre contribute to its bright, reflective appearance. Natural growth patterns may include faint internal veils, wispy inclusions, or subtle phantoms formed during stages of crystal development, all of which add to the individuality of each piece.
Geological Origin – Brazilian Quartz Deposits
Brazil is one of the world’s most important sources of high-quality quartz crystals. Many specimens originate from hydrothermal veins and pegmatitic environments, where silica-rich fluids slowly crystallised within cavities over millions of years. This slow crystallisation process allows for the development of large, well-formed crystals with notable clarity.
Quartz from Brazil is internationally recognised for its optical transparency and well-defined morphology. These geological environments often produce associated minerals such as feldspar, mica, and tourmaline, depending on the specific locality and host rock conditions.
Aesthetic Qualities
This Rock Crystal Quartz specimen displays the classic features collectors seek: clean natural faces, crisp edges, and attractive light reflection across its prism surfaces. The transparency allows light to pass through the crystal body, highlighting its internal structure and natural growth characteristics.
Clear quartz remains one of the most versatile and recognisable mineral specimens, equally suited to a curated mineral cabinet, modern interior display, educational geology collection, or photography styling piece. Its neutral appearance complements a wide range of decorative settings.
Collecting and Historical Significance
Quartz has been valued across cultures for centuries for its natural beauty and durability. In historical contexts, clear quartz has been traditionally associated with clarity and spiritual symbolism, though today it is primarily appreciated for its geological formation, structural perfection, and universal appeal among mineral collectors.
Brazilian Rock Crystal continues to be a cornerstone specimen for both beginner and advanced collectors due to its iconic crystal form and global recognition within the mineral community.
Authenticity and Presentation
This crystal is a carefully chosen piece from the Alice Purnell Collection. You will receive the exact specimen shown in the photographs. It is a genuine natural mineral and includes a Certificate of Authenticity lifetime guarantee generic card.
An excellent addition to any mineral collection, a thoughtful gift for geology enthusiasts, or a timeless display specimen showcasing the natural beauty of Brazilian Rock Crystal Quartz.









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