Crystals & Stones

Native gold on quartz from California; photo by James St. John, CC BY 2.0 — Roosters Peacock crystal guide
Gold: The Stone of Value, Confidence & Enduring Purpose
Native Gold is elemental Au, a soft, exceptionally dense and highly malleable isometric mineral whose resistance to corrosion helped make it important in trade, jewelry, religion and art. Explore its... Read more...
Goethite with calcite crystals; CC0 via Wikimedia Commons — Roosters Peacock crystal guide
Goethite: The Stone of Grounding, Persistence & Honest Reflection
Goethite is iron oxyhydroxide, FeO(OH), an orthorhombic mineral common in soils, iron ores and weathering zones, occurring as earthy, fibrous, botryoidal or crystalline material. Explore its mineral science, name history,... Read more...
Glaucophane specimen from USGS mineral collection; public domain — Roosters Peacock crystal guide
Glaucophane: The Stone of Adaptation, Perspective & Quiet Strength
Glaucophane is a blue-to-lavender sodium amphibole characteristic of high-pressure, low-temperature blueschist metamorphism in subduction settings; intact specimens should be kept dust-free and never ground or sanded. Explore its mineral science,... Read more...
Gem silica, chalcedony over chrysocolla from Arizona; photo by Robert M. Lavinsky, CC BY-SA 3.0 — Roosters Peacock crystal guide
Gem Silica: The Stone of Clear Expression, Calm & Creative Insight
Gem Silica is a gem trade name for translucent blue-to-blue-green chalcedony colored by Chrysocolla rather than a separate mineral species. Explore its mineral science, trade-name and identification caveats, modern symbolic... Read more...
Gaspeite specimen from Western Australia; photo by Robert M. Lavinsky, CC BY-SA 3.0 — Roosters Peacock crystal guide
Gaspeite: The Stone of Growth, Discernment & Grounded Renewal
Gaspeite is nickel carbonate, NiCO3, a yellowish-green trigonal Calcite-group mineral found in nickel-rich deposits and sometimes used for cabochons and inlay; because it contains nickel, avoid creating dust. Explore its... Read more...
Galena mineral specimen; photo by GOKLuLe, CC BY-SA 3.0 — Roosters Peacock crystal guide
Galena: The Stone of Grounding, Structure & Honest Reflection
Galena is lead sulfide, PbS, a dense isometric mineral known for metallic lead-gray cubes, perfect cubic cleavage and its historic importance as the principal ore of lead; careful handling is... Read more...
Fuchsite specimen; photo by Shannon Heinle, CC0 — Roosters Peacock crystal guide
Fuchsite: The Stone of Renewal, Heart Wisdom & Healthy Boundaries
Fuchsite is the chromium-bearing green variety of Muscovite mica, a soft monoclinic mineral with perfect basal cleavage that can split into thin elastic sheets. Explore its mineral science, name history,... Read more...
Green fluorite crystal on micaceous matrix from Namibia; photo by CarlesMillan, CC BY-SA 3.0 — Roosters Peacock crystal guide
Fluorite: The Stone of Focus, Order & Clear Thinking
Fluorite is calcium fluoride, CaF2, an isometric mineral famous for cubic and octahedral crystals, perfect octahedral cleavage, Mohs hardness 4 and a wide range of colors. Explore its mineral science,... Read more...
Fire opal specimen; photo by Shannon Heinle, CC0 — Roosters Peacock crystal guide
Fire Opal: The Stone of Passion, Creativity & Radiant Confidence
Fire Opal is a transparent-to-translucent Opal variety, hydrated amorphous silica SiO2·nH2O, known for yellow-to-orange-to-red body color and not necessarily for play-of-color. Explore its mineral science, Mexican gem history, modern symbolic... Read more...
Natural fire agate rough specimen from New Mexico; photo by Malinadams, CC BY-SA 3.0 — Roosters Peacock crystal guide
Fire Agate: The Stone of Vitality, Courage & Creative Spark
Fire Agate is an iridescent chalcedony variety, primarily SiO2, whose warm flashes are produced by extremely thin iron-rich layers and thin-film interference within the stone. Explore its mineral science, optical-effect... Read more...
Orthoclase feldspar specimen from Brazil; photo by Géry Parent, public domain — representative of the Feldspar Group, Roosters Peacock crystal guide
Feldspar: The Stone of Adaptability, Foundation & Everyday Strength
Feldspar is a major mineral group of aluminum-bearing framework silicates that makes up a large portion of Earth's crust and includes members such as Albite, Anorthite, Orthoclase and Microcline. Explore... Read more...
Euxenite-(Y) mineral specimen — Roosters Peacock crystal guide
Euxenite-(Y): The Stone of Grounded Awareness, Complexity & Responsible Focus
Euxenite-(Y) is a dense, complex yttrium-bearing niobate-titanate that can contain uranium and thorium and may become metamict from natural radiation damage; treat specimens as collector displays rather than carry stones.... Read more...