Chlorite Quartz (including Phantom Quartz)
Silicon Dioxide with Magnesium-Iron-Aluminum Silicate hydroxide inclusions · Semi-Precious Gemstone / Collector Mineral
Crystal System
Trigonal (Quartz host); inclusions are typically Monoclinic or Triclinic. Habit is usually prismatic or drusy; this specimen is tumbled/polished.
Mineral Group
Silicates (Tectosilicate host with Phyllosilicate inclusions)
Chemical Formula
SiO2 + (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6
Formation Process
Hydrothermal. The quartz grows in liquid solutions, and during pauses in growth, chlorite minerals settle on the crystal faces, which are then 'engulfed' by subsequent quartz growth stages.
About This Crystal
A polished, transparent to translucent quartz host containing mossy green or grey-green fibrous and platy inclusions. The interior displays 'phantom' layers or cloud-like masses of chlorite, with a vitreous surface luster and internal veining.
Physical Characteristics
Color: Clear with green to olive inclusions; Streak: White; Cleavage: Indistinct/None; Fracture: Conchoidal; Specific Gravity: 2.65; Fluorescence: Usually inert.
Optical Properties
Refractive Index: 1.544-1.553; Double Refractive; Uniaxial positive; Birefringence: 0.009; Weak pleochroism in chlorite inclusions.
Hardness & Durability
Origin Region
Brazil, Madagascar, and the Swiss Alps are primary sources; often found in hydrothermal veins and alpine clefts.
Hardness & Durability
Mohs Hardness: 7 (Quartz host). Highly durable for jewelry, though internal chlorite layers can create planes of weakness if subjected to high pressure.
Care & Maintenance
Wash with warm soapy water and a soft brush. Avoid ultrasonic cleaners if the inclusions reach the surface; stable in sunlight and most household chemicals.
Rarity & Value
Common to Uncommon. Value is determined by the clarity of the quartz and the distinctness of the 'phantom' shapes or moss-like patterns inside. Generally affordable.
Special Characteristics
Features 'phantom' inclusions where the internal green layers trace the historical growth edges of the crystal. Exhibits moss-like or garden-like internal textures often called 'Lodolite' or 'Scenic Quartz'.
Lore & History
Historically used as a 'healing' stone by various cultures; in modern metaphysical practices, it is associated with heart chakra healing, grounding, and personal growth cycles. It was valued by Victorian collectors as 'garden quartz'.