This is a small bulk parcel of 100% natural, untreated rough Enstatite sourced from Pakistan. The parcel total weight is 190 grams. This lot offers stones ranging from under carat to 1 carat in size — ideal for faceting trials, lapidary practice, or building a starter inventory of a genuinely rare collector mineral. Stone Characteristics Stone: Enstatite (Magnesium Inosilicate) Origin: Pakistan Total Weight: 190 grams Carat Size Range: Under carat to 1 carat Clarity Range: Semi-Transparent · Translucent · VS · SI · Included Treatment: 100% Natural – Earthly Mined. No treatments applied. Enstatite — Rarity, Pakistan Occurrence & Geology How Rare Is Enstatite? Enstatite is genuinely super rare. While the mineral itself (MgSiO₃) is common in the Earth's mantle and meteorites. Key rarity factors: Most Enstatite is opaque or heavily included — transparent faceting rough is a small fraction of total occurrence Star Enstatite (chatoyant/asterism) and green Enstatite are among the rarest gem varieties It is rarely stocked by mainstream gem dealers; primarily traded in specialist lapidary and collector circles Pakistan material with green and golden hues commands premium collector interest Crystal Structure System: Orthorhombic Space Group: Pbca Habit: Prismatic crystals, often striated along the c-axis; also massive or lamellar Cleavage: Good in two directions (prismatic), which makes faceting challenging Hardness: 5–6 Mohs Refractive Index: ~1.656–1.680 (biaxial positive) Luster: Vitreous to pearly on cleavage faces SG: ~3.20–3.30 Geological Formation Enstatite forms in three distinct geological environments: Ultramafic & Mafic Igneous Rocks — crystallizes from magnesium-rich magmas in peridotites, dunites, and pyroxenites; common in the Earth's upper mantle Metamorphic Rocks — forms in high-temperature, low-pressure metamorphism of magnesium-rich sediments (e.g., magnesian schists, serpentinites); Pakistan's gem Enstatite is primarily of this origin Meteorites (Enstatite Chondrites) — one of the defining minerals of a rare class of meteorites, confirming its cosmic abundance but terrestrial gem rarity In Pakistan, the gem-quality material is associated with ophiolite sequences and ultramafic belts along the Indus Suture Zone — a collision boundary between the Indian and Eurasian plates that has uplifted mantle-derived rocks to the surface, exposing Enstatite-bearing peridotites and metamorphic assemblages. All stones are earthly mined, naturally formed, and carry no synthetic treatments. Parcel contents may vary slightly in individual piece size and color distribution as shown.
