💫 Iridescent lore and care
Rainbow Hematite is not a separate mineral species but an iridescent variety or appearance of Hematite. The name is also used commercially for coated, treated or manufactured materials, including strongly magnetic ferrite beads. Natural pieces may show uneven colour following crystal grains and surface texture, while identification should consider the substrate, streak, density, magnetism and reliable provenance rather than colour alone.
The Hematite beneath the colour measures approximately 5–6.5 on the Mohs scale, but the delicate iridescent surface may be much easier to scratch, dull or remove. Handle specimens by their edges and clean only with a soft dry brush or clean microfibre cloth. Avoid polishing compounds, abrasive rubbing, acids, solvents, soaking, steam and ultrasonic cleaning, as damage to the nanoscale coating may permanently reduce the rainbow effect.