Crystals & Stones

Cobalt-bearing calcite specimen from Bou Azzer, Morocco; photo by Géry Parent, CC BY-SA 4.0 — Roosters Peacock crystal guide
Cobalt Calcite: The Stone of Compassion, Confidence & Heart-Centered Strength
Cobalt Calcite is pink cobalt-bearing Calcite, commonly represented as (Ca,Co)CO3, with Mohs hardness about 3 and the acid sensitivity of other calcite varieties. Explore its mineral science, distinction from Spherocobaltite,... Read more...
Natural citrine quartz specimen; public-domain photo by Géry Parent — Roosters Peacock crystal guide
Citrine: The Stone of Confidence, Abundance & Clear Motivation
Citrine is the yellow-to-brownish-orange variety of Quartz, SiO2, with natural material relatively rare and much of the modern market consisting of heat-treated Amethyst. Explore its mineral science, treatment history, modern... Read more...
Chrysoprase specimen from Australia; photo by Jarno, CC BY 2.0 — Roosters Peacock crystal guide
Chrysoprase: The Stone of Renewal, Confidence & Heart-Centered Growth
Chrysoprase is an apple-green chalcedony variety whose color comes from nickel-bearing silicate inclusions rather than chromium. Explore its mineral science, name history, modern symbolic associations with renewal, confidence and heart-centered... Read more...
Chrysocolla specimen from Australia; photo by Lloyd.james0615, CC BY 3.0 — Roosters Peacock crystal guide
Chrysocolla: The Stone of Communication, Calm & Wise Expression
Chrysocolla is a soft, hydrated copper aluminum silicate mineral with variable composition, typically forming blue-to-green botryoidal masses, crusts and vein fillings in oxidized copper deposits. Explore its mineral science, ancient... Read more...
Twinned chrysoberyl specimen; photo by Tom Epaminondas and Eurico Zimbres, CC BY-SA 2.0 Brazil — Roosters Peacock crystal guide
Chrysoberyl: The Stone of Resilience, Focus & Prosperous Growth
Chrysoberyl is beryllium aluminum oxide, BeAl2O4, an orthorhombic gemstone mineral with Mohs hardness 8.5 that includes Alexandrite and cat's-eye varieties. Explore its mineral science, name history, modern symbolic associations with... Read more...
Chiastolite specimen; public-domain photo by Géry Parent — Roosters Peacock crystal guide
Chiastolite: The Stone of Protection, Transition & Centered Strength
Chiastolite is a cross-patterned variety of Andalusite, Al2SiO5, formed when carbon-rich inclusions become arranged into a natural cross within growing crystals. Explore its mineral science, historic 'cross stone' tradition, modern... Read more...
Charoite specimen from Russia; photo by Adrian Tync, CC BY-SA 4.0 — Roosters Peacock crystal guide
Charoite: The Stone of Transformation, Courage & Spiritual Perspective
Charoite is a complex hydrated monoclinic silicate best known for swirling lilac-to-deep-purple material from the Murun Massif region of Russia. Explore its mineral science, locality-based name history, modern symbolic associations... Read more...
Chalcopyrite specimen; photo by Lloyd.james0615, CC BY-SA 3.0 — Roosters Peacock crystal guide
Chalcopyrite: The Stone of Opportunity, Insight & Confident Action
Chalcopyrite is copper iron sulfide, CuFeS2, a brass-yellow tetragonal mineral and one of the world's most important copper ores, often developing colorful iridescent tarnish. Explore its mineral science, mining importance,... Read more...
Natural chalcedony specimen; photo by Teravolt, CC BY 3.0 — Roosters Peacock crystal guide
Chalcedony: The Stone of Balance, Communication & Quiet Strength
Chalcedony is a microcrystalline silica material composed mainly of quartz with variable moganite and includes familiar varieties such as Agate, Onyx, Carnelian, Chrysoprase and Bloodstone. Explore its mineral science, ancient... Read more...
Cerussite crystal specimen; CC0 via Wikimedia Commons — Roosters Peacock crystal guide
Cerussite: The Stone of Adaptability, Focus & Careful Transformation
Cerussite is lead carbonate, PbCO3, an unusually dense orthorhombic mineral known for brilliant luster and complex twinning; because it contains lead, specimens require careful handling. Explore its mineral science, alteration... Read more...
Celestine crystal specimen from Madagascar; photo by Didier Descouens, CC BY-SA 4.0 — Roosters Peacock crystal guide
Celestite (Celestine): The Stone of Peace, Reflection & Open Perspective
Celestite, properly Celestine, is strontium sulfate, SrSO4, an orthorhombic Baryte-group mineral known for pale blue crystals and a Mohs hardness of 3–3.5. Explore its mineral science, name history, modern symbolic... Read more...
Natural carnelian specimen from New Jersey — Roosters Peacock crystal guide
Carnelian: The Stone of Courage, Creativity & Forward Motion
Carnelian is an orange-to-red variety of chalcedony colored by iron-bearing compounds and iron oxides, with a long history in beads, seals and carved stones. Explore its mineral science, treatment notes,... Read more...