Ettringite – Mineral Meaning, Properties & Care
Ettringite is a soft, white to pale gray sulfate mineral known for its needle‑like crystals; while not common in jewelry, collectors value its unique formation and traditional crystal meanings.
Color: Grey
Perthite – Meaning, Properties, and Buying Guide
Perthite is a feldspar intergrowth of albite and microcline, displaying white to gray tones with subtle color flashes. Readers care for its unique appearance, gemstone symbolism, and practical guidance for jewelry use and purchasing.
Cobaltite – Gemstone Meaning, Properties, Identification, and Jewelry Use
Cobaltite is a metallic gray‑black sulfide mineral prized for its deep, reflective sheen and occasional violet iridescence. Though uncommon as a gemstone, cut cobaltite cabochons are used in high‑end jewelry for their unique luster, and collectors value them for their mineralogical rarity.
Serpentine Subgroup – Mineral and Gemstone Overview
Serpentine is a group of green to gray silicate minerals prized for their smooth, waxy luster and historic use as ornamental stone. Often called serpentine jade or bowenite, it is valued in jewelry and metaphysical traditions for its calming energy and distinctive appearance.
Zinnwaldite – Mineral Profile, Meaning & Jewelry Guide
Zinnwaldite is a brown‑black mica mineral prized for its perfect basal cleavage and pearly luster. It appears in platy sheets used in ornamental jewelry and is valued for its traditional metaphysical meanings.
Siderite – Mineral and Gemstone Profile
Siderite is an iron carbonate mineral known for its earthy yellow, brown, green, or gray hues. Valued both as a collector’s stone and occasional jewelry component, it offers unique visual appeal and traditional meanings that attract gem enthusiasts and metaphysical practitioners alike.
Microlite: Mineral Properties, Meaning, and Jewelry Use
Microlite is a rare oxide gemstone, typically dark brown to black, valued for its high refractive index and occasional use in specialty jewelry. Readers care for its unique mineral properties, traditional symbolism, and guidance on care and purchase.
Smoky Quartz (Var.) – Comprehensive Gemstone Encyclopedia Entry
Smoky quartz is a transparent to translucent silicate gemstone ranging from light gray to deep brown‑black. Valued for its grounding appearance, it is used in jewelry and believed to promote calm, making it a popular choice for collectors and spiritual seekers.
Spurrite – Mineral Properties, Meaning, and Jewelry Use
Spurrite is a rare calcium silicate carbonate gemstone known for its white to gray hues and occasional pale blue tones. Collectors value its distinctive crystal habit, while jewelry makers appreciate its subtle elegance and durability.
Sperrylite – Platinum Arsenide Mineral, Gemstone Properties and Care
Sperrylite is a rare platinum arsenide mineral known for its metallic silver‑gray luster and high density, occasionally used in high‑end jewelry and valued by collectors for its unique appearance.