Rainbow Aura Kyanite (Titanium Coated Kyanite)
Aluminium Silicate var. Kyanite coated with titanium or gold vapor · Enhanced Mineral Specimen
Crystal System
Triclinic, typically forming elongate, bladed crystals
Mineral Group
Silicates, specifically Nesosilicates
Chemical Formula
Al2SiO5
Formation Process
Metamorphic formation of the host kyanite in aluminum-rich pelitic rocks under high pressures, followed by artificial high-temperature vacuum bonding of metal oxides to the surface
About This Crystal
An elongate, bladed kyanite crystal cluster displaying a vibrant, metallic rainbow interference sheen across its striated surface, featuring bright flashes of magenta, gold, blue, and green with a highly reflective surface coating
Physical Characteristics
Strongly anisotropic hardness with 4.5 parallel to the length and 6.5 across the blade, perfect cleavage in one direction, specific gravity around 3.53 to 3.67, metallic to pearly luster on coated surfaces, and a white streak
Optical Properties
Biaxial negative with high birefringence, strong pleochroism visible beneath the enhanced coating, and an iridescent metallic sheen caused by thin-film interference from the surface vapor deposition
Hardness & Durability
Origin Region
Natural kyanite sourced from Brazil, USA, Nepal, or Switzerland, with laboratory vapor deposition applied in the USA or China
Hardness & Durability
Mohs hardness varies from 4.5 to 6.5 depending on the direction tested; durability is moderate, though the surface coating can be scratched or degraded by harsh abrasives or strong acids
Care & Maintenance
Clean gently with a soft, dry cloth or lukewarm soapy water; avoid ultrasonic cleaners, harsh chemicals, abrasive pads, and prolonged exposure to abrasive scrubbing which can damage the metallic coating
Rarity & Value
Commonly available as a decorative enhanced mineral specimen; value is driven by the aesthetic appeal of the vibrant rainbow coating and the size of the bladed crystal cluster
Special Characteristics
Displays vivid artificial iridescence or thin-film interference colors across striated bladed cleavage faces, combining the natural anisotropy of kyanite with a high-luster metallic rainbow display
Lore & History
Modern creation valued in contemporary crystal healing and metaphysical practices for aligning all chakras, stimulating energy flow, and enhancing meditation, though these are cultural beliefs without scientific backing