Magnetite Crystal Natural Magnetic Iron Oxide Mineral Specimen

Magnetite – Natural Magnetic Iron Oxide Mineral Specimen

This Magnetite specimen is a genuine natural mineral, carefully selected for its metallic lustre, crystal form, and natural magnetic properties. The photograph shows the exact piece you will receive, allowing you to view its structure, surface texture, and overall quality. Full sizing details are available in the listing photos to provide accurate scale and proportions.

Your specimen includes a Certificate of Authenticity lifetime guarantee generic card, confirming it as a genuine Magnetite mineral example.

Mineral Species & Scientific Classification

Magnetite is an iron oxide mineral with the chemical formula Fe₃O₄. It belongs to the oxide mineral group and crystallises in the isometric crystal system, commonly forming octahedral or dodecahedral crystals. Its cubic symmetry often produces sharp, geometric crystal faces in well-formed specimens.

With a Mohs hardness of approximately 5.5 to 6.5, Magnetite is moderately durable and suitable for display. It has a metallic to submetallic lustre and is opaque. One of its defining characteristics is its natural magnetism, as it is one of the most strongly magnetic naturally occurring minerals.

Magnetite is also known as lodestone when naturally magnetised.

Colour, Crystal Habit & Physical Properties

Magnetite typically appears black to dark grey with a metallic sheen. Fresh crystal faces can display a bright reflective surface, while massive forms may appear more subdued or slightly granular.

Its natural magnetism is a key identifying feature, and specimens may attract small iron objects. The streak of Magnetite is black, consistent with its high iron content.

Crystals may occur as sharp octahedrons embedded in matrix rock or as massive, granular aggregates depending on the geological environment. Any minor surface features or irregularities are part of the mineral’s natural formation.

This specimen is natural and untreated, preserving its authentic structure and magnetic character.

Geological Formation

Magnetite forms in a wide range of geological environments, including igneous, metamorphic, and sedimentary settings. It commonly develops in mafic and ultramafic igneous rocks, as well as in metamorphic rocks such as schist and gneiss.

It can also form through hydrothermal processes where iron-rich fluids precipitate iron oxides within veins and fractures. In some sedimentary environments, fine magnetite grains accumulate in placer deposits due to their high density.

Magnetite often occurs alongside minerals such as hematite, pyrite, quartz, olivine, and feldspar depending on the host rock and formation conditions.

Collecting, Display & Traditional Associations

Magnetite is highly valued by mineral collectors for its distinctive crystal shapes and natural magnetic properties. Well-formed isometric crystals are particularly sought after for display in mineral cabinets and educational collections.

Due to its magnetic nature, Magnetite has long attracted interest in scientific study, particularly in the history of magnetism and navigation.

In various cultural traditions, magnetic stones have been traditionally associated with attraction and balance in symbolic practices. These associations are spiritual in nature and reflect historical interpretations of naturally magnetic minerals.

Authenticity & Individual Selection

• Genuine natural Magnetite
• Chemical formula: Fe₃O₄
• Mineral group: Oxide
• Crystal system: Isometric
• Naturally magnetic
• Carefully selected individual specimen
• You will receive the exact piece shown
• Includes Certificate of Authenticity lifetime guarantee generic card

Each Magnetite specimen forms through natural geological processes over extended timescales, resulting in unique crystal development, surface textures, and magnetic strength variations in every individual piece.