Kristalopedia
Little Angels
Angelite • trade name for blue anhydrite (CaSO₄) Family: calcium sulfate minerals (anhydrite ↔ gypsum) Crystal system: orthorhombic • Cleavage: perfect in three directions (≈90°) Hardness: ~3–3.5 • SG: ~2.9–3.0...
Little Angels
Angelite • trade name for blue anhydrite (CaSO₄) Family: calcium sulfate minerals (anhydrite ↔ gypsum) Crystal system: orthorhombic • Cleavage: perfect in three directions (≈90°) Hardness: ~3–3.5 • SG: ~2.9–3.0...
Ametrinas
Quartz family (bicolor) Amethyst + citrine Mohs 7 Ametrine 💜✨ — where amethyst meets citrine in one crystal Half twilight, half sunrise. Ametrine—"two moods, one gem"—easy to relate to. Ametrine—a...
Ametrinas
Quartz family (bicolor) Amethyst + citrine Mohs 7 Ametrine 💜✨ — where amethyst meets citrine in one crystal Half twilight, half sunrise. Ametrine—"two moods, one gem"—easy to relate to. Ametrine—a...
Students (female)
Family of double sulfate "alums" Potassium alum • KAl(SO4)2·12H2O Isometric • octahedral crystals Mohs ~2–2.5 Alum ❄️ — what it is, why it's loved, and how to use it wisely...
Students (female)
Family of double sulfate "alums" Potassium alum • KAl(SO4)2·12H2O Isometric • octahedral crystals Mohs ~2–2.5 Alum ❄️ — what it is, why it's loved, and how to use it wisely...
Amazonite
Feldspar family (microcline) Triclinic • cross twinning Mohs ~6–6.5 Amazonite 🐬 — the calm of sea greenery, science, and how to work with it That unique bluish-green shade—like a calm...
Amazonite
Feldspar family (microcline) Triclinic • cross twinning Mohs ~6–6.5 Amazonite 🐬 — the calm of sea greenery, science, and how to work with it That unique bluish-green shade—like a calm...
Almandines
Garnet group (Fe–Al silicate) Isometric • dodecahedral habits Mohs ~7–7.5 Almandine garnet ❤️ — deep wine red, ancient history, and modern ways to wear it A rich, easy-to-read dive into...
Almandines
Garnet group (Fe–Al silicate) Isometric • dodecahedral habits Mohs ~7–7.5 Almandine garnet ❤️ — deep wine red, ancient history, and modern ways to wear it A rich, easy-to-read dive into...
Agate geodes
Quartz family (chalcedony + quartz druse) Volcanic cavities → crystal caves Mohs 6.5–7 (durable) Agate geodes 🥥 — how they form, what to look for, and beautiful ways to use...
Agate geodes
Quartz family (chalcedony + quartz druse) Volcanic cavities → crystal caves Mohs 6.5–7 (durable) Agate geodes 🥥 — how they form, what to look for, and beautiful ways to use...