Natural History Tetrahedrite and Pyrite Mineral

A cluster of fine, lustrous pyrite crystals form the classic Peruvian locality, crystallising principally as pyritohedrons, with accessory nailhead calcite and a sprinkling of small sphalerites, in ol

A large pyrite 'fool's gold' cube with some smaller cubes on a matrix. 244 grams, 10cm (4"). From an old Lincolnshire collection 1980s; from Spain. [No Reserve]

. A finely crystallised group of pyrite crystals with 'cube modified by octahedron' crystallisation and bright faces, from the old Gregory, Bottley and Lloyd collection from, Huanzala Mine, Ancash Pro

A fine specimen of quartz and tetrahedrite, the quartz forming long prismatic crystals, the tetrahedrite in brassy tetrahedrons scattered across the quartz, in white card tray. See Bonewitz, Dr. Ronal

A group of ten pyrite cubes with well formed, even faces, and a metallic lustre. From Huancuco, Peru; from the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory'

Group of five pyrite specimens with well-formed crystals, from Mexico. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008, p.137. 672 grams, 50 - 80mm (2 - 3 1/2"). Found Mexico; from the historic

A rectangle of shiny pyrite in a white card box, with label reading: 'PYRITE, Huanuco, Peru'. 98 grams, 33mm (1 1/4"). From the historic ‘Victorian Museum’ and later collection of Gregory, Bottley

A specimen of chalcopyrite (copper pyrite) showing iridescence typical of the weathered mineral, but in an unusually intense blue-green; in plastic display box with label on underside reading: 'Peacoc

Comprising: popcorn quartz, amethyst, agate, smoky quartz, brown obsidian, citrine, pyrite, 'desert rose', and others. 823 grams total, 23-81 mm (7/8 - 3 1/8 in.). Ex Mineral Imports, London, UK.Grego

. A mixed group comprising: a galena block from Spain; a celestina block from Sicily; a large scalenahedral calcite crystal from Rumania; a block of cubic octahedral pyrite from Peru. 948 grams total,

Each with their own unique One of a Kind ( OOAK) color variations, design patterns and forms. Measure from 3' - 3/4" x 4 3/4" - 6 1/2". Condition: Good overall condition having normal average wear. Es

Natural history mineral specimens including rock crystal, rose quartz, agates, and geodes. Largest: 3" H X 33.5" W.

Early Jurassic Period, Lower Lias stage, 200-195 million years BP. A group of ten small pyrite ammonites, mainly Crucilobiceros densinodulum and Promicroceras sp from Pentacrinites Band, Stonebarrow,

Early Jurassic Period, 200-195 million years BP. A group of ten small pyrite ammonites, mainly Crucilobiceros densinodulum and Promicroceras sp. from Pentacrinites Band, Stonebarrow, Charmouth, Lyme R

. Comprising around 80 pyrites or 'fool's gold' crystal specimens. 672 grams total, 15-36 mm (1/2 - 1 3/8 in.). From Peru. From the historic ‘Victorian Museum’ or later collection of Gregory, Bott

Natural history mineral specimen of toucans with gilt metal feet, perched on a rock, with stolomite, amethyst, obsidian and other stones. On black dolomite base, retailed by Amsterdam Sauer. [10 x 10

Natural history mineral specimen of toucans with gilt metal feet, perched on a rock, with stolomite, amethyst, obsidian and other stones. On black dolomite base, retailed by Amsterdam Sauer. [10 x 10

Natural history Obsidian mineral specimen, large with natural inclusions and smoothed surface. 2.75" H X 13" W X 11.5" D.

An exceptionally fine mushroom-shaped moldavite specimen with classic ablation melting, accompanied by polished pebbles of amethyst and jasper. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008,

A specimen of vanadinite with calcite, the vanadinite crystals transparent and lustrous, from Mexico, in old white card tray with handwritten label reading: 'Durango, Mexico'. From Durango, Mexico; fr

A fine specimen of wulfenite consisting a sheet of numerous tabular orange crystals on a matrix of limestone with an underlying sheet of white calcite? From the historic ‘Victorian Museum’ collect

A mixed group of 50 polished mineral 'pebbles'. 1.12 kg total, 31-45 mm (1 1/4 - 1 3/4 in.). Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [50, No Reserve]

Natural History- Amethyst Mineral Specimen Estate Natural Amethyst Geode Color: shades of deep purple Dimension: approximately: 5"x 5.75" Condition:good estate conditionProvenance: Private Estate

A fine specimen of apophyllite with a sheet of smaller crystals on a thin agate base, and a well-formed and attractive cluster standing up from the base, from Maharashata, India. Found Maharashata, In