Natural History Quartz and Sphalerite Mineral Specimen.

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

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 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

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

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

Art by God, Monumental natural history crystal quartz mineral specimen. Deep purple cathedral amethyst geode. Emits a vibrant, positive energy, helping to balance the harmony in one's life, home or of

Art by God. A natural history crystal quartz mineral specimen. Deep purple cathedral amethyst geode naturally formed over millions of years into the shape of Horn of Plenty Cornucopia. Emits a vibrant

Art by God. Natural History crystal quartz mineral specimen. Deep purple cathedral amethyst geode. Emits a vibrant, positive energy, helping to balance the harmony in one's life, home or office space.

Art by God. A natural history crystal quartz mineral specimen. Deep purple cathedral amethyst geode. Large maw like opening to front, giving the impression of an emerging shark's head with smaller ope

Art by God, Natural History Crystal Quartz Mineral Specimens. Near matched pair of deep purple Amethyst cathedrals. Not only are these geodes stunningly beautiful, they also give off a vibration of po

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 unusual specimen of anatase crystals developed on the outside of a light smoky quartz crystal, from Norway, in old white card tray with handwritten label reading: 'Anatase on Quartz, Handangervidoa,

Art by God, Natural History Crystal Citrine Quartz Mineral Specimen. Show stoppingly beautiful, giving off vibrations of positive energy. Great conversation piece that can balance the harmony in one's

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

Art by God. A large natural history deep purple crystal cathedral amethyst quartz geode mineral specimen. Emits a vibrant, positive energy, helping to balance the harmony in one's life, home, or offic

Art by God. A large natural history deep purple crystal cathedral amethyst quartz geode mineral specimen. Emits a vibrant, positive energy, helping to balance the harmony in one's life, home, or offic

Art by God. A large natural history deep purple crystal cathedral amethyst quartz geode mineral specimen. Emits a vibrant, positive energy, helping to balance the harmony in one's life, home, or offic

. 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]

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

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,

. 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

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

A mixed mineral group comprising: a rich dark blue crystalline mass of sodalite, a concave matrix surface invested with quartz, atacamite and malachite, a rashleighite specimen, and a lustrous white m

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]