Crystals
Snowflake obsidian
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Snowflake obsidian
<style> /* LIGHT MODE ONLY — intentionally no dark‑mode overrides */ .snowflake-obsidian-entry *{box-sizing:border-box} .snowflake-obsidian-entry h1,.snowflake-obsidian-entry h2,.snowflake-obsidian-entry h3{line-height:1.25; margin:0 0 .75rem} .snowflake-obsidian-entry h1{font-size:2.45rem; letter-spacing:-.02em} .snowflake-obsidian-entry h2{font-size:1.6rem;...
Tiger eye
Tiger’s Eye • chatoyant quartz with aligned amphibole-derived inclusions Dominant phase: SiO2 Host: columnar polycrystalline quartz Included fibers: crocidolite or related sodic amphibole Mohs about 6.5–7 • SG about 2.64–2.71...
Tiger eye
Tiger’s Eye • chatoyant quartz with aligned amphibole-derived inclusions Dominant phase: SiO2 Host: columnar polycrystalline quartz Included fibers: crocidolite or related sodic amphibole Mohs about 6.5–7 • SG about 2.64–2.71...
Rose quartz
Pink gem variety of quartz SiO2 Classic material is massive and usually translucent Color from aligned dumortierite-related silicate nanofibers Rare euhedral pink quartz has a different color-center mechanism Trigonal α-quartz...
Rose quartz
Pink gem variety of quartz SiO2 Classic material is massive and usually translucent Color from aligned dumortierite-related silicate nanofibers Rare euhedral pink quartz has a different color-center mechanism Trigonal α-quartz...
Red jasper
Opaque microcrystalline silica-rich stone Red color dominated by finely dispersed hematite No rock-wide cleavage; conchoidal to uneven fracture Mohs approximately 6.5–7 Massive, ribboned, brecciated, scenic, and orbicular patterns Widely distributed...
Red jasper
Opaque microcrystalline silica-rich stone Red color dominated by finely dispersed hematite No rock-wide cleavage; conchoidal to uneven fracture Mohs approximately 6.5–7 Massive, ribboned, brecciated, scenic, and orbicular patterns Widely distributed...
Smoky quartz
Macrocrystalline quartz, SiO2 Brown color from irradiation-activated aluminum defects Mohs 7, specific gravity approximately 2.65 Trigonal, uniaxial positive, no cleavage Cairngorm, morion, phantoms, scepters, and gwindels “Smoky topaz” is an...
Smoky quartz
Macrocrystalline quartz, SiO2 Brown color from irradiation-activated aluminum defects Mohs 7, specific gravity approximately 2.65 Trigonal, uniaxial positive, no cleavage Cairngorm, morion, phantoms, scepters, and gwindels “Smoky topaz” is an...
Snakeskin jasper
Trade-named jaspilite and banded iron formation Red iron-rich bands with pale chert laminae Classic source: Turee Creek, Pilbara, Western Australia Formation age approximately 2.45 billion years Folds, microbands, scale-like cells,...
Snakeskin jasper
Trade-named jaspilite and banded iron formation Red iron-rich bands with pale chert laminae Classic source: Turee Creek, Pilbara, Western Australia Formation age approximately 2.45 billion years Folds, microbands, scale-like cells,...