

Kyanite specimens for sale
22 for sale · $25–$1,495 USD
115 in the gallery
Kyanite is a silicate mineral known for its distinctive blue to blue‑gray blades, typically forming elongated crystals with a pearly to vitreous luster. It has a variable hardness depending on the direction of the crystal axes, and its crystals are often found in prismatic, sometimes columnar aggregates that catch the eye of collectors seeking striking, color‑rich specimens. Notable localities include Brazil, Tanzania, the United States, Switzerland, and Kenya, where kyanite crystals from hydrothermal and metamorphic environments have yielded sharp, well‑formed crystals that highlight its characteristic crystal faces.
- Formula
- Al2(SiO4)O
- Rarity
- Common
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Nesosilicate; kyanite group, Al2SiO5 polymorph
Key characteristics
- Crystal system
- triclinic
- Mohs hardness
- 4.5–7
- Specific gravity
- 3.53–3.67
- Luster
- vitreous, pearly
- Transparency
- transparent, translucent
- Color
- blue, white, gray, green, black
- Streak
- white
- Cleavage
- perfect
- Fracture
- splintery, uneven
- Crystal habit
- bladed, prismatic, fibrous, radiating, massive
- Gem mineral
- Classic / historic
Buy Kyanite specimens
View all 22Where Kyanite is found
Top localities
- Minas Gerais8 specimens
- Sponda Alp - Pizzo Forno8 specimens
- Bahia5 specimens
- Goiás5 specimens
- São José da Safira5 specimens
- Barra do Salinas District2 specimens
- Galiléia2 specimens
- Loliondo2 specimens
- Coronel Murta2 specimens
- Brumado1 specimen
Guides
All guidesAbout Kyanite
Collectors prize kyanite for its delicate form, range of color, and the challenge of finding crystals with clean terminations and minimal matrix. The mineral’s slivery, bladed habit and lustrous surfaces make it a favorite for display in mineral cabinets, particularly when it shows the preferred blue hues and well‑developed faces. While some specimens can be translucent and exhibit a soft sheen, others present a more opaque appearance that still showcases its distinctive crystal geometry. Careful handling helps preserve the crystal integrity, as thin blades can be fragile and require gentle display and storage.




















