The Gregory, Bottley & Lloyd, Natural History Auction

A remarkable specimen of Australian precious opal layers in a quartzite matrix, exhibiting a range of colours: green, gold, blue and purple; in ol...

An exceptionally fine matched pair of sawn and polished agate and amethyst-lined geode halves from Brazil, both with fine dark amethyst, one with ...

A very large, colourless quartz crystal from Brazil, showing perfect crystal form, transparent to translucent, with natural, unaltered faces, with...

A celestine (also called celestite) geode filled with large, finely-formed, sky-blue celestine crystals, the largest crystals up to 32mm on a face...

A large amethyst geode section with well-formed and richly coloured amethyst crystals, with several well-formed secondary large white calcite crys...

A sphere cut from an agate geode with a quartz crystal filling, the crystal terminations outlined by another mineral, probably hematite, with anti...

A fine obelisk carved from rutilated quartz, with several dozen needles of red-brown rutile, and a number of reflective veils that provide rainbow...

A remarkable obelisk cut from a single, large smoky quartz crystal, with internal veils and reflective surface producing rainbow colour dispersion...

A fine specimen of rhodochrosite on quartz and galena from Peru, with pink rosettes of rhodochrosite on knobs of tiny quartz crystals, all on coar...

A sawn half of an amethyst geode with fine amethyst crystals, including one amethyst 'porcupine', the polished section showing the original quartz...

A group of ten one-off polished malachite mineral specimens of good quality malachite. From the historic ‘Victorian Museum’ collection of Gregory,...

Group of five richly coloured pieces of rose quartz, from South Africa. Found South Africa; from the historic ‘Victorian Museum’ collection of Gre...

Group of five pyrite specimens with well-formed crystals, from Mexico. Found Mexico; from the historic ‘Victorian Museum’ collection of Gregory, B...

Group of one hundred 'Desert Rose' crystalline gypsum specimens with sand grain inclusions, mostly of single spheroid form, showing the crystal pl...

Group of ten clear to purple and lavender triangular cleaved fluorite crystals, some with strong colour-banding, from the Tri-State area of the US...

Group of one hundred 'Desert Rose' crystalline gypsum specimens with sand grain inclusions, mostly of single spheroid form, showing the crystal pl...

Group of five pyrite specimens with well-formed crystals, from Mexico. Found Mexico; from the historic ‘Victorian Museum’ collection of Gregory, B...

Group of five richly coloured pieces of rose quartz, from South Africa. Found South Africa; from the historic ‘Victorian Museum’ collection of Gre...

A group of ten one-off polished malachite mineral specimens of good quality malachite. From the historic ‘Victorian Museum’ collection of Gregory,...

Group of five wind-rounded pebbles with their individual hollowed out 'nests', from the Kalahari Desert region, western Africa; each set provided ...

Group of five wind-rounded pebbles with their individual hollowed out 'nests', from the Kalahari Desert region, western Africa; each set provided ...

An unusually fine specimen of sphalerite and quartz, with large, well-formed sphalerite crystals covered with prismatic quartz crystals, from Huan...

An exceptional specimen of lepidolite (lithium) mica from Brazil, consisting of numerous lustrous pseudo-hexagonal plates in various orientations,...

A fine, knob-shaped 'porcupine' of citrine crystals, from Brazil. Found Brazil; from the historic ‘Victorian Museum’ collection of Gregory, Bottle...

A specimen of natural vein gold, mounted in a plastic display case. From the historic ‘Victorian Museum’ collection of Gregory, Bottley & Lloyd (G...

A group of fine green tourmaline crystals on albite, with overgrowths of fluorite, from Pakistan; in old white card tray with handwritten label re...

A specimen of wire silver in a skarn matrix, the silver naturally surface-oxidized, from the El Mochito Mine, near San Pedro Sula, Santa Barbara D...

A specimen with multiple layers of crystalline silver in a skarn matrix, the silver naturally surface-oxidized, from the El Mochito Mine, near San...

A particularly fine example of precious opal in matrix from Australia, with numerous opal veins, all showing good 'fire', with blues and greens pr...

A matrix emerald specimen, with an emerald crystal of approximately 1.5 carats surrounded by calcite, with the top of an additional crystal just v...

A hexagonal, richly-coloured, tabular ruby crystal with penetrating smaller ruby crystal, in old white card tray with label reading: 'RUBY XL, MER...

A finely made obelisk of rock crystal quartz, near-flawless with an attractive veil of fine bubbles in the lower third. From the historic ‘Victori...

An unusual specimen of galena with chalcopyrite overgrowths, followed by a second phase of galena growth to form a single cube,with a further calc...

A fine egg carved from richly patterned Russian amazonite, with stand. From the historic ‘Victorian Museum’ collection of Gregory, Bottley & Lloyd...

A fine-quality rock crystal egg, carved from near-flawless rock crystal quartz, with stand. From the historic ‘Victorian Museum’ collection of Gre...

A high-quality malachite gemstone egg with finely patterned malachite, accurately cut, and with a high polish. From the historic ‘Victorian Museum...

An unusually fine specimen of the zeolite mineral chabazite on quartz, from India, a few of the chabazites as hopper crystals, with minor accessor...

A very large scalenohedral calcite crystal with multi-stage growth patterns on the faces. From the historic ‘Victorian Museum’ collection of Grego...

A rare replacement (pseudomorph) of an octahedral cuprite crystal by malachite; in old white card tray with old Gregory, Bottley and Lloyd label r...

A cluster of large, well-formed sphalerite crystals with lustrous faces and a cluster of radiating quartz crystals, from Peru, in old white card t...

A finely coloured obelisk cut from a single amethyst crystal, with numerous internal features which provide additional sparkle and interest, in ol...

A band of well-crystallised and richly coloured azurite crystals on a matrix of chrysocolla and an unidentified opalized material, from Arizona, U...

A rich red gemmy, finely formed ruby crystal in a marble matrix, with accessory biotite, from Afghanistan; in old white card tray with old Gregory...

A section through an agate-centred amethyst stalactite, polished on both sides, in old white card tray with old Gregory, Bottley and Lloyd label r...

A group of three gem-quality, rectangular lapis lazuli plaques from Afghanistan illustrating the types of occurrence, polished on one side, each a...

A group of three gem-quality, rectangular lapis lazuli plaques from Afghanistan illustrating the types of occurrence, polished on one side, each a...

A polished cross-section of a malachite stalactite from Zaire, in old white card tray with old Gregory, Bottley and Lloyd label reading: 'MALACHIT...

A light green, very well-formed, lustrous aquamarine crystal with accessory muscovite from Gilgit, Himalayas, North Pakistan; the termination pina...

A magnificent specimen of cerussite from the famous Tsumeb, Namibia locality, with several finely-terminated larger crystals and a number of small...

A group of two selenite gypsum crystals, transparent, well-formed, and nicely terminated, in old white card tray. From the historic ‘Victorian Mus...

An agate geode filled with light lilac amethyst crystals with accessory brown calcite, from Brazil, in old white card tray. From Brazil; from the ...

A Cumbrian specimen of galena with fluorite, the galena in octahedron-modified cubes and slightly rounded by resorption, the fluorite in purple cu...

A crust of the rare copper sulphate mineral langite on a rock groundmass, from Ireland, in old white card tray with adhesive tape label reading: '...

A specimen of the rare minerals cumengite and boleite on matrix, from Boleo, Mexico, in old white card tray with adhesive tape label reading: 'Cum...

A specimen consisting of a crust of botryoidal and crystalline chalcanthite on a rock groundmass, in old white card tray with adhesive tape labels...

An unusual specimen consisting of several dozen near-spherical white calcite crystals on a sheet of white bladed barite, from Cumbria, in old whit...

A Cornish specimen of tetrahedrite on fluorite, with two old adhesive tape labels to back reading: '3082, Cornwall' and '160', in old white card t...

An unusual grouping of tapering quartz crystals from the Bully Cleave Quarry, Devon, in old white card tray with tape label reading: 'Bully cleave...

A specimen of crystallised native copper in matrix from Cornwall, copper throughout, with one group of crystals particularly prominent, natural ox...

A specimen of loellingite in quartz, from Cornwall, with bright veins of the mineral throughout the specimen, in old white card tray with adhesive...