Crystals & Stones

Rough Welo Ethiopian opal; photo by Dpulitzer, CC BY-SA 4.0 — Roosters Peacock crystal guide
Ethiopian Opal: The Stone of Creativity, Reflection & Shifting Perspective
Ethiopian Opal is hydrous amorphous silica, SiO2·nH2O, and much Welo material is hydrophane, meaning it can absorb water and temporarily change appearance. Explore its mineral science, modern Ethiopian source history,... Read more...
Erythrite specimen; photo by Lloyd.james0615 — Roosters Peacock crystal guide
Erythrite: The Stone of Awareness, Boundaries & Careful Transformation
Erythrite is a very soft hydrated cobalt arsenate, Co3(AsO4)2·8H2O, known for vivid pink-to-magenta 'cobalt bloom' in oxidized cobalt deposits; because it contains arsenic, careful handling is important. Explore its mineral... Read more...
Epidote crystal specimen from Pakistan — Roosters Peacock crystal guide
Epidote: The Stone of Growth, Perspective & Purposeful Change
Epidote is a calcium-aluminum-iron silicate hydroxide mineral in the monoclinic system, commonly recognized by pistachio-green to dark-green crystals in metamorphic and hydrothermal settings. Explore its mineral science, name history, modern... Read more...
Enstatite crystal from Tanzania; photo by John Sobolewski, CC BY 3.0 — Roosters Peacock crystal guide
Enstatite: The Stone of Endurance, Balance & Quiet Strength
Enstatite is a magnesium silicate orthopyroxene, commonly written MgSiO3, found in igneous and metamorphic rocks as well as meteorites. Explore its mineral science, name history, modern symbolic associations with endurance,... Read more...
Natural emerald crystal from Colombia — Roosters Peacock crystal guide
Emerald: The Stone of Growth, Devotion & Heart-Centered Wisdom
Emerald is the vivid green gem variety of Beryl, Be3Al2Si6O18, colored chiefly by chromium and/or vanadium and recognized as May’s birthstone. Explore its mineral science, common fracture-filling treatments, ancient gem... Read more...
Elestial-style skeletal quartz specimen from Brazil — Roosters Peacock crystal guide
Elestial Quartz: The Stone of Reflection, Integration & Layered Insight
Elestial Quartz is a trade name for Quartz, SiO2, with complex skeletal, stepped or layered crystal growth rather than a separate mineral species. Explore its mineral science, trade-name caveats, modern... Read more...
Elbaite tourmaline specimen from Brazil — Roosters Peacock crystal guide
Elbaite: The Stone of Expression, Creativity & Adaptable Growth
Elbaite is the lithium-rich, vividly colored member of the Tourmaline Group, a trigonal mineral known for strong color zoning and a Mohs hardness around 7.5. Explore its mineral science, Elba... Read more...
Dumortierite-included quartz from Brazil; photo by James St. John — Roosters Peacock crystal guide
Dumortierite Quartz: The Stone of Focus, Insight & Structured Intention
Dumortierite Quartz is Quartz, SiO2, containing visible Dumortierite inclusions rather than a separate mineral species; striking blue needle and spray inclusions are especially known from Brazil. Explore its mineral science,... Read more...
Dumortierite specimen from California; photo by Leon Hupperichs, CC BY-SA 3.0 — Roosters Peacock crystal guide
Dumortierite: The Stone of Discipline, Clarity & Inner Strength
Dumortierite is an aluminum borosilicate mineral in the orthorhombic system, commonly blue to violet-blue and relatively hard at Mohs 7–8. Explore its mineral science, 1881 naming history, modern symbolic associations... Read more...
Dravite tourmaline crystal from Brazil; public-domain photo by Géry Parent — Roosters Peacock crystal guide
Dravite: The Stone of Grounding, Endurance & Steady Confidence
Dravite is the magnesium-rich brown member of the Tourmaline Group, a trigonal borosilicate mineral with Mohs hardness about 7. Explore its mineral science, Drave River name origin, modern symbolic associations... Read more...
Descloizite crystal specimen from Berg Aukas, Namibia — Roosters Peacock crystal guide
Descloizite: The Stone of Focus, Responsibility & Grounded Determination
Descloizite is lead zinc vanadate hydroxide, PbZn(VO4)(OH), a dense orthorhombic secondary mineral of oxidized ore deposits; because it contains lead and vanadium, careful handling is important. Explore its mineral science,... Read more...
Dawsonite crystal specimen from Mont Saint-Hilaire, Québec — Roosters Peacock crystal guide
Dawsonite: The Stone of Clarity, Order & Practical Adaptability
Dawsonite is sodium aluminum carbonate hydroxide, NaAlCO3(OH)2, a soft orthorhombic mineral that commonly forms bladed, fibrous, acicular or rosette-like aggregates. Explore its mineral science, Montréal type-locality history, modern symbolic associations... Read more...