Sodalite and Hematite
Sodalite (Sodalite Group) and Hematite (Iron Oxide) · Semi-Precious Gemstones / Decorative Stones / Mineral Specimen
Crystal System
Sodalite: Cubic (Isometric), typically massive in beads; Hematite: Trigonal (Hexagonal), typically metallic massive or botryoidal habit in beads
Mineral Group
Sodalite: Silicates (Tectosilicates); Hematite: Oxides (Hematite group)
Chemical Formula
Sodalite: Na8(Al6Si6O24)Cl2; Hematite: Fe2O3
Formation Process
Sodalite forms in silica-poor igneous rocks (nepheline syenites); Hematite forms via hydrothermal processes, contact metamorphism, or sedimentary precipitation (banded iron formations)
About This Crystal
The bracelet features alternating round beads. The Sodalite beads are opaque blue with characteristic mottled white (calcite) veining and dark patches. The Hematite beads are dark metallic grey to black with a high mirror-like luster and a smooth surface.
Physical Characteristics
Sodalite: Blue color, white streak, poor cleavage, vitreous to greasy luster, SG 2.27-2.33. Hematite: Metallic grey color, reddish-brown streak, no cleavage, metallic luster, SG 5.26, often slightly magnetic if impurities are present.
Optical Properties
Sodalite: Isotropic, RI ~1.48, typically non-pleochroic; Hematite: Opaque, extremely high RI, uniaxial negative, no visible pleochroism in beads.
Hardness & Durability
Origin Region
Sodalite: Canada (Bancroft), Brazil, Namibia; Hematite: Brazil, Australia, South Africa, USA (Lake Superior)
Hardness & Durability
Sodalite: 5.5 to 6 on Mohs scale (lower durability); Hematite: 5.5 to 6.5. Both are moderately hard but Sodalite is prone to scratches and chemical etching.
Care & Maintenance
Avoid ultrasonic cleaners and steam. Clean with warm soapy water and a soft cloth. Store separately to prevent Hematite from scratching the Sodalite. Avoid acids as they can damage Sodalite.
Rarity & Value
Common; both materials are widely available and affordable. Value is determined by the depth of blue in Sodalite and the quality of polish/surface smoothness in Hematite. Most Hematite in jewelry is reconstituted or 'Hemalyke' (synthetic).
Special Characteristics
Sodalite often shows bright orange or yellow fluorescence under longwave UV light. Hematite is known for its high density (heavy feel) and metallic sheen.
Lore & History
Sodalite was discovered in 1811 and became popular after a Royal visit to Canada in 1901 (sometimes called Princess Blue). It is traditionally associated with logic and the Throat Chakra. Hematite has been used since ancient Egypt as a pigment and is traditionally associated with grounding and the Root Chakra.