Mother of Pearl (Nacre) with Dyed Shell Beads
Biogenic Calcium Carbonate (Aragonite/Calcite) with Organic Conchiolin · Organic Gem / Decorative Jewelry
Crystal System
Orthorhombic (Aragonite) or Trigonal (Calcite); massive, layered, and tabular habit
Mineral Group
Carbonates
Chemical Formula
CaCO3
Formation Process
Biogenic sedimentary process where mollusks secrete layers of aragonite platelets bound by conchiolin on the inner layer of their shells
About This Crystal
The specimen consists of jewelry components featuring tumbled, irregular, and polished flat shell fragments that display vibrant, artificial coloration in shades of pink, green, blue, and brown alongside natural iridescent nacre. The larger focal beads show a pearlescent, shimmering luster with swirling patterns, complemented by smaller multi-colored seed beads.
Physical Characteristics
Iridescent play of color (nacreous sheen); streak is white; cleavage is imperfect to distinct depending on the underlying carbonate polymorph; specific gravity is approximately 2.65 to 2.93; brittle tenacity
Optical Properties
Biaxial negative (aragonite) or uniaxial negative (calcite); strong birefringence; exhibits a distinctive pearlescent luster and iridescent orient caused by the light interference from microscopic alternating layers of aragonite and conchiolin
Hardness & Durability
Origin Region
Global marine environments, commonly cultured in tropical waters like the South Pacific, Philippines, China, and Indonesia
Hardness & Durability
Mohs hardness of 3.5 to 4.5; low durability and poor toughness; sensitive to scratching, acids, household chemicals, and prolonged exposure to cosmetics or perfumes
Care & Maintenance
Clean gently with a soft, damp cloth and mild soapy water; never use ultrasonic cleaners, steam, or harsh chemical agents; store separately in a soft pouch to prevent scratching from harder gemstones
Rarity & Value
Common and widely accessible; value is relatively low, determined primarily by the quality of the nacre, size of the pieces, and craftsmanship of the jewelry
Special Characteristics
Nacreous iridescence (mother-of-pearl effect) displaying shifting rainbow colors under light due to the structural micro-architecture of microscopic aragonite platelets; many pieces in this assemblage have undergone artificial dyeing to enhance or alter their natural color
Lore & History
Historically used across maritime cultures for amulets, inlay work, and ceremonial ornaments. In traditional metaphysical practices, mother-of-pearl is associated with soothing calming energies, intuition, prosperity, and connection to the protective, nurturing energy of the ocean and water elements