Serpentine (variety Healerite or Infinite Stone)
Serpentine-group mineral, variety Magnesium Silicate Hydroxide · Semi-Precious Gemstone / Mineral Specimen
Crystal System
Monoclinic; typically occurs in massive, platy, or fibrous habits, rarely as distinct crystals.
Mineral Group
Silicates (Subgroup: Phyllosilicates)
Chemical Formula
Mg3Si2O5(OH)4 (often containing Fe, Ni, Al, or Zn trace elements)
Formation Process
Metamorphic; formed through the hydrothermal alteration of ultramafic rocks (like peridotite and pyroxenite) at low temperatures and in the presence of water.
About This Crystal
The specimen is a tumbled stone with a waxy to greasy luster. It features a mottled appearance with dark forest green to black patches intermixed with lighter yellowish-green and lime-colored veins. It is opaque to slightly translucent on thin edges.
Physical Characteristics
Color: Lime green to dark green/black; Streak: White; Cleavage: Poor/Commonly absent in massive forms; Fracture: Conchoidal to splintery; Specific Gravity: 2.5-2.6; Fluorescence: Generally none, sometimes weak yellow.
Optical Properties
Refractive Index: 1.55-1.57; Birefringence: 0.008-0.014; Optical Sign: Biaxial negative; Luster: Waxy to silky; No significant pleochroism.
Hardness & Durability
Origin Region
Prominent sources include USA (Washington/Vermont), Peru, Canada, and South Africa. Found in serpentinized ultramafic rocks.
Hardness & Durability
Mohs Hardness: 2.5 to 5.5 (varies by mineral composition). Relatively soft and susceptible to scratching; low toughness due to platy structure.
Care & Maintenance
Clean with warm soapy water and a soft cloth; avoid ultrasonic or steam cleaners. Sensitive to acids and household chemicals. Store separately to avoid scratches from harder stones like quartz.
Rarity & Value
Common; Value is generally low for tumbled stones ($2-$10). Rarity increases for high-transparency varieties like 'Williamsite'. Tumbled stones are rarely treated.
Special Characteristics
Features a distinct soapy or slippery feel to the touch; often contains inclusions of Magnetite or Chromite which can create dark spotting.
Lore & History
Historically used in ancient Rome as protection against sorcery and venom. In modern crystal practices, it is associated with the Heart Chakra and believed to aid in cellular regeneration and emotional balance (traditional lore, not scientific fact).