Blue Kyanite on Quartz — Bladed Crystal Growth with Quartz Matrix
Blue Kyanite on Quartz — Bladed Crystal Growth with Quartz Matrix
Blue Kyanite on Quartz — Bladed Crystal Growth with Quartz Matrix
A sharp, high-contrast blue kyanite cluster on quartz, showing classic elongated blade formations embedded within a natural quartz matrix.
This piece clearly displays how kyanite grows — in flattened, striated blades, often forming in metamorphic environments where pressure directs crystal growth into long, layered structures. The surrounding quartz adds contrast and highlights the structure, forming a natural “frame” around the kyanite.
The variation from deep blue to pale blue/white comes from natural growth zoning and surface weathering, not artificial treatment.
🔍 Key Features
📍 Well-defined bladed kyanite crystals
📍 Strong linear striations along crystal length
📍 Natural quartz matrix with crystalline texture
📍 Blue to silvery-white colour variation
📍 Layered, directional growth pattern
📍 Raw, unpolished structure showing natural formation
📏 Dimensions
Size: 7 cm x 3.6 cm
Weight: 65 grams
🧪 Geological & Scientific Notes
Primary Mineral: Kyanite
Chemical Formula: Al₂SiO₅
Crystal System: Triclinic
Mohs Hardness: ~4.5 parallel to length / ~6.5–7 across (anisotropic hardness)
Lustre: Vitreous to pearly
Transparency: Transparent to translucent
Kyanite is known for its anisotropic hardness, meaning it has different hardness depending on the direction — a key identifying property and something rarely seen in most minerals.
The quartz matrix (SiO₂) forms later or alongside the kyanite, filling gaps and creating a natural composite structure.
🧼 Care
Handle carefully — kyanite blades can be fragile
Avoid pressure along thin edges
Do not submerge for long periods
Clean gently with a soft brush or dry cloth
💡 Why This Piece Stands Out
This is a structure-first specimen, not a polished display piece — and that’s exactly what gives it value.
✔ Clear example of directional crystal growth
✔ Strong contrast between kyanite and quartz
✔ Visible striations and blade formation
✔ Great educational piece for explaining metamorphic minerals