Green Kyanite Crystal Mineral Specimen Brazil Natural Bladed Stone 30-60mm

Description Genuine Green Kyanite Mineral Specimen – Brazil This listing is for a genuine Green Kyanite crystal mineral specimen from Brazil, sized approximately 30–60mm. The photograph shown represents an example of the actual specimen you will receive. Each piece is individually selected for its colour, structure, and overall quality. Your crystal includes a Certificate of Authenticity lifetime guarantee generic card, confirming it is a 100% natural and genuine mineral specimen. Please refer to the photo for full sizing and scale details. Mineral Species & Chemical Composition Green Kyanite is a natural variety of kyanite (Al₂SiO₅), an aluminium silicate mineral that forms under specific metamorphic conditions. It belongs to a group of polymorphs that also includes andalusite and sillimanite, which share the same chemical formula but differ in crystal structure and formation environment. Key mineral information: Mineral Species: Kyanite Chemical Formula: Al₂SiO₅ Crystal System: Triclinic Hardness: 4.5–5 parallel to crystal length, 6.5–7 across width Lustre: Vitreous to pearly Transparency: Transparent to translucent Cleavage: Perfect in one direction Kyanite is notable for its directional hardness, meaning its resistance to scratching varies depending on the orientation of the crystal. Geological Formation & Brazilian Origin Green Kyanite forms in aluminium-rich metamorphic rocks such as schist and gneiss. It develops under high-pressure, low-temperature regional metamorphism, often associated with mountain-building processes. Its presence can indicate specific pressure conditions during rock transformation, making it a mineral of geological significance. Brazil is one of the world’s recognised sources of quality kyanite specimens. The country’s metamorphic terrains produce well-formed bladed crystals with strong colour saturation and natural clarity. These crystals are commonly associated with: Quartz Mica (muscovite or biotite) Garnet Feldspar The green colour typically results from trace elements within the crystal lattice, giving rise to soft to vibrant green tones. Crystal Habit & Visual Characteristics Green Kyanite typically forms in elongated, flattened, bladed crystals. These blades may appear fibrous or layered, often displaying parallel striations along their length. The natural structure gives each specimen a distinctive linear appearance. Common features include: Light to deep green colouring Silky or glass-like lustre Natural surface striations Layered internal texture Occasional mineral inclusions Depending on lighting, the green tones may appear more vivid or subdued. Each specimen is natural and untreated, preserving its authentic mineral character. Size & Display Appeal With a size range of approximately 30–60mm, this specimen is ideal for collectors seeking a display-ready mineral without requiring a large cabinet space. Its elongated crystal habit makes it particularly attractive when displayed individually or alongside other metamorphic minerals. Suitable for: Mineral and crystal collections Geological study samples Educational displays Cabinet specimen trays Unique natural gifts In spiritual traditions, green kyanite is traditionally associated with balance and connection; however, this listing presents the crystal strictly as a natural mineral specimen. Authenticity & Product Details Genuine Green Kyanite Mineral Specimen Origin: Brazil Size Range: Approximately 30–60mm Natural, unpolished bladed crystal Carefully selected piece Includes Certificate of Authenticity lifetime guarantee generic card Photo shows an example of the actual specimen you will receive A striking Brazilian Green Kyanite crystal featuring natural bladed formation and rich colour, perfect for mineral collectors and enthusiasts of authentic geological specimens.