Nebula Stone
Alkali-rich Igneous Rock (composed of Quartz, Aegirine, Riebeckite, and Anorthoclase) · Semi-Precious Gemstone / Decorative Stone
Crystal System
Monoclinic and Hexagonal (polyminerallic); typically occurs in a massive habit or as rounded nodules.
Mineral Group
Silicates (primarily Inosilicates and Tectosilicates)
Chemical Formula
Complex mixture: NaFeSi2O6 (Aegirine) + Na2(Fe,Mg)3Al2Si8O22(OH)2 (Riebeckite) + SiO2 (Quartz)
Formation Process
Igneous; it is a specialized volcanic glass/rock that underwent slow cooling and devitrification, allowing rare alkali-rich minerals to crystallize into eye-like orbicular patterns.
About This Crystal
An opaque, dark green to nearly black matrix featuring distinctive glowing light green orbicular 'nebulas' or eyes. The luster ranges from vitreous to waxy when polished. Surface is smooth but may show slight pitting in natural state.
Physical Characteristics
Color: Dark forest green/black matrix with bright green eyes. Streak: White. Cleavage: None (massive). Fracture: Conchoidal to uneven. Specific Gravity: 2.65 - 2.80. Non-fluorescent under most UV.
Optical Properties
Refractive Index: Variable (~1.54-1.65). Opaque. Notable for its orbicular pattern and occasional chatoyant-like shimmer within the Aegirine rich eyes.
Hardness & Durability
Origin Region
North America, specifically the high deserts of the Southwestern USA (New Mexico/Chihuahua border regions).
Hardness & Durability
Mohs hardness: 6.5 to 7. Toughness is good due to its dense, microcrystalline structure. Suitable for most jewelry including rings.
Care & Maintenance
Wash with warm soapy water and a soft cloth. Avoid harsh chemicals and sudden temperature shifts. Store away from harder stones like Diamonds or Sapphires.
Rarity & Value
Uncommon; sourced from a specific locality. Value is driven by the clarity and contrast of the 'eyes'. Typically ranges from $5 to $50 for small polished spheres or cabochons.
Special Characteristics
Unique orbicular patterns comprising Aegirine and Riebeckite crystals in a dense quartz/feldspar matrix, giving the appearance of a galaxy or nebula.
Lore & History
Discovered in the 1990s; culturally associated with 'Cosmic Consciousness.' In metaphysical traditions, it is believed to bridge heaven and earth, grounding spiritual energy into the physical body.