Natural History - Aragonite Crystal Specimen Group [11].

Comprising eleven clusters of pseudo-hexagonal twinned crystals. 313 grams total, 28-54 mm (1 1/8 - 2 1/8 in.). From Brazil.Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [11, No

A group of 50 quartz crystal specimens including clear examples with points. 1.67 kg total, 27-87 mm (1 - 3 3/8 in.). Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [50, No Reserve]

. 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

Six Natural History SpecimensGroup of six various natural history specimens: four petrified wood pieces, stromatolite slice and orthoceras plaque; L: 11 3/4" (longest)

Nice example of transparent colorless form of quartz gemstone having an appearance of large chunks of shattered glass. No apparent markings. Dimensions: 10 X 11.25 X 4.5 in. Condition: Good overa

A group of six polished agate geode slices; colour-enhanced. 396 grams total, 8.7-11.8 cm (3 3/8 - 4 5/8 in.). Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [6, No Reserve]

. 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,

. A group of twelve mineral specimens of muscovite (white mica) and quartz crystals on albite, with a specimen of the zeolites stilbite and heulandite on matrix. Private collection, Cambridgeshire, UK

Large group of petrified wood, rock and crystal specimens in shades of pink and brown. Sizes range from 1 1/2" to 9".

A mixed mineral group comprising: a limestone matrix with rare blue quartz inclusions, a domed basalt matrix richly covered in green olivine crystals, a powdery limestone matrix carpeted with celestit

A group of four aquamarine crystals, all terminated, from Brazil, in old white card tray. From Brazil; from the historic ‘Victorian Museum’ collection of Gregory, Bottley & Lloyd (Gregory's); form

A group of twenty yellow chunks of sulphur displaying clusters of small crystals. From the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's); formerly Gregory

A group of pyrite specimens with well-formed crystals ranging in size; some on a matrix. From Peru; from the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's)

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 group of semi-transparent, blocky, yellow-green apatite encrusting quartz, with accessory calcite and a single prismatic quartz crystal, with handwritten note reading:'APATITE, Panasqueriva', Tipex

A rare specimen consisting of numerous finely-crystallised anatase crystals encrusting a group of quartz crystals, from Norway, in old white card tray with handwritten label reading: 'Anatase on Quart

A finely coloured group of citrine crystals from Brazil in a perspex sphere, with perspex stand. From the historic ‘Victorian Museum’ collection of Gregory, Bottley & Lloyd (Gregory's); formerly G

A free-standing section of a geode with amethyst crystals of good colour. 657 grams, 11 cm high (4 1/4 in.). From a Lincolnshire, UK, collection. [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 group of classic, curved pink dolomite crystals on a matrix of rock dolomite, in white card tray. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008, p.181. 384 grams, 95mm (3 3/4"). From t

A group of unusually formed, frosted calcite crystals on matrix. From India; From the historic ‘Victorian Museum’ and later collection of Gregory, Bottley & Lloyd (Gregory's); formerly Gregory, Bo

A very unusual quartz encrustation, originally formed over a group of calcite crystals which were subsequently dissolved away leaving the quartz coating retaining the shapes of the original calcite cr

An unusually fine group of sharply formed, deep green epidote crystals with quartz on a rock groundmass, from the famous Green Monster Mountain locality on Prince of Wales Island, Alaska; in old white

(lot of 3) Geological specimens, in natural rock formations, including: (1) aragonite cluster, approx 6"h, 6.5"w, 4.75"d, (1) pink crystal with green specks, approx 3.5"h, 11.75"w, 8"d, (1) quartz, ap