Natural History - Quartz, Galena, and Sphalerite

An interesting specimen of quartz, galena, sphalerite, and rhodochrosite from the famous Trep?a, Serbia, region north of Kosovo, famous since Roman times, with old adhesive tape label reading: '4450,

An unusually fine specimen of sphalerite and quartz, with large, well-formed sphalerite crystals covered with prismatic quartz crystals, from Huanaco, Peru. See Bonewitz, Dr. Ronald Louis, Rocks & Min

Chalcopyrite on Galena with Sphalerite and Needle Quartz Peru 14oz

Galena and Sphalerite on Hemetite Coated Quartz Crystals Mexico 6oz

An estate grouping of natural quartz crystals. Dimensions:Largest measures 10" Notes:We Offer Shipping! Provenance:

A group of nine natural quartz crystal pendants with silver-coloured metal caps, each cap mounting three small tourmaline crystals, and one faceted amethyst drop with an electroformed cap, all in plas

Comprising a cluster of well-formed radiating prismatic crystals. 244 grams, 90 mm (3 1/2 in.). From Brazil.Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [No Reserve]

Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished clear quartz pebbles. 449 grams total, 19 cm (7 1/2 in.). From Brazil.Ex Mineral Imports, London, UK

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 fine cluster of bright and transparent prismatic quartz crystals, still retaining some of the orange iron oxide from their original deposit, in white card tray. See Bonewitz, Dr. Ronald Louis, Rocks

A large, well-formed single crystal of rock crystal quartz. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008, p.219. 752 grams, 14cm (5 1/2"). From the historic ‘Victorian Museum’ a

. A sphalerite mineral specimen from Northumberland in an old collector's card tray. 820 grams, 13.5cm (5 1/4"). Property of a Lincolnshire, UK, gentleman; acquired on the UK art market. [No Reserve]

An unusual quartz formation with finely formed crystals intergrown with another mineral, probably albite. From the historic ‘Victorian Museum’ and later collection of Gregory, Bottley & Lloyd (Gre

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]

A very unusual, large, double-terminated fenster smoky quartz, with additional smaller crystals. Some of the hollows are liquid-filled, and have gas bubbles with paper labels pointing to them. Its nam

The nodule opened to reveal the dense clusters of small quartz crystals in enhanced pink colour. 211 grams total, 59-62 mm (2 3/8 - 2 3/8 in.). From a Cambridgeshire, UK, collection. [2, No Reserve]

A group of two rose quartz acupressure tools, hexagonal in section, pointed at one end, rounded at the other. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008, p.221. 126 grams total, 10.6-10.9c

. Mainly translucent with some small rainbow reflections. 83 grams, 37 mm (1 1/2 in.). From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). [No Reserve]

A group of cut and polished smoky quartz obelisks with rainbow reflections. From Brazil; from the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's); formerly

A group of fifty quartz points with clear colour and rainbow reflections. From Brazil; from the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's); formerly Gr

A group of ten richly coloured pieces of rose quartz. From Brazil; from the historic ‘Victorian Museum’ or later collection of Gregory, Bottley & Lloyd (Gregory's); formerly Gregory, Bottley & Co.

Group of five richly coloured pieces of rose quartz, from South Africa. Found South Africa; from the historic ‘Victorian Museum’ collection of Gregory, Bottley & Lloyd (Gregory's); formerly Gregor

A group of three galena specimens from the Davidschacht, Freiberg, Saxony, Germany deposit. 81 grams total, 7-32mm (1/4 - 1 1/4"). From the collection of a German professional, Münster, Germany; from

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