Natural Iolite Rough – Trichroic Facet Grade Gemstone – Deep Violet-Blue, Golden & Gray Pleochroic Crystal
An extraordinary Iolite crystal that shifts through deep violet-blue, smoky gray, and golden hues under light — a textbook example of rare trichroism. This translucent rough is collector-grade and ideal for faceting or display.
💎 Gemological Notes
• Stone: Iolite (Cordierite)
• Transparency: Semi-transparent with vivid pleochroic shift
• Observed Colors: Deep violet-blue, smoky gray-blue, and golden brown/yellow
• Condition: Rough, natural, facet-grade zone visible
• Origin (likely): India
not all Iolite shows this vividly.
Only high-grade rough with proper orientation and clarity reveals strong trichroism (three-color shift). Most commercial pieces appear flat blue or dull gray. The intensity and purity of the violet-to-golden shift make your piece exceptional for its size and state.
This is collector quality — both for gem cutters and mineral enthusiasts.