Abalone Shell / Paua Shell (Jewelry Setting)
Biogenic Calcium Carbonate (Aragonite/Conchiolin composite) · Organic Gem / Decorative Stone
Crystal System
Orthorhombic (Aragonite phase)
Mineral Group
Carbonates
Chemical Formula
CaCO3
Formation Process
Biogenic precipitation by marine gastropod mollusks of the family Haliotidae
About This Crystal
The image features jewelry links shaped like flowers containing iridescent inlay, commonly crafted from abalone or paua shell. The material displays vibrant flashes of blue, green, purple, and magenta due to structural coloration, set within a metallic silver-toned alloy setting.
Physical Characteristics
Iridescent play of color, white streak, uneven fracture, specific gravity around 2.93, brittle tenacity, no true crystal cleavage in the mineralogical sense due to its layered nacreous structure.
Optical Properties
Strong iridescence (nacreous luster), pearlescence, and structural interference colors causing shifting hues of blue, green, and pink depending on the viewing angle.
Hardness & Durability
Origin Region
New Zealand, Pacific coast of North America, South Africa, Japan
Hardness & Durability
Mohs hardness of 3.5 to 4.0. Low durability, sensitive to scratching, acids, and harsh chemicals. Poor suitability for daily-wear rings without protective settings.
Care & Maintenance
Clean gently with a soft, damp cloth and mild soap. Avoid ultrasonic cleaners, steam, prolonged immersion in water, and contact with harsh chemicals, perfumes, or cosmetics.
Rarity & Value
Common to moderately uncommon depending on the specific grade and vividness of the shell colors (paua shell from New Zealand being particularly prized). Inexpensive to moderate price range as fashion jewelry.
Special Characteristics
Brilliant iridescence produced by the diffraction of light through microscopic overlapping layers of aragonite platelets (nacre).
Lore & History
Used by indigenous peoples globally, notably Native Americans and the Māori of New Zealand, for carving, ceremonial use, and jewelry. Symbolizes water energy, emotional balance, and connection to the ocean in modern metaphysical practices.