Cassiterite is a tin oxide mineral with the chemical formula SnO₂, the primary ore of tin. Its dominant element, Tin (Sn), has an atomic number of 50 on the periodic table. Cassiterite crystallises in the tetragonal system and often appears as lustrous prismatic or pyramidal crystals, ranging in colour from deep brown to black, sometimes with golden or reddish hues in gem-quality specimens.

This piece comes from the world-famous Panasqueira Mine in Portugal, one of the most celebrated European localities for high-quality Cassiterite crystals. The mine is renowned for producing superbly sharp, highly lustrous specimens often associated with quartz, siderite, fluorapatite, and ferberite. With a hardness of 6–7 on the Mohs scale and an adamantine lustre, Cassiterite is both durable and visually striking, making it a prized addition to any mineral collection.

Metaphysical Properties
Cassiterite is said to encourage grounding, discipline, and clarity. It is believed to help focus energy during times of transformation and support perseverance.

Chakra Association

• Root Chakra – Grounds energy, promoting stability.

• Solar Plexus Chakra – Enhances willpower, confidence, and motivation.

• Crown Chakra – Supports clarity and alignment with higher purpose.

Zodiac Connection

• Capricorn – Resonates with determination and practicality.

• Virgo – Supports focus, structure, and attention to detail.

• Taurus – Reinforces persistence, grounding, and patience.

Element

• Earth – Symbolises Cassiterite’s strong grounding nature and crystalline stability.

Crystal Pairing

• Smoky Quartz – Strengthens grounding and balance.

• Hematite – Enhances focus, discipline, and energetic stability.

• Clear Quartz – Amplifies clarity and harmonises with Cassiterite’s disciplined energy.

Location
Panasqueira Mine, Covilhã, Castelo Branco District, Portugal

Hardness
6–7 (Mohs scale)

Please Note
You will receive the exact Cassiterite specimen shown in the images. Each piece is one-of-a-kind.