Natural History Pyrite Crystals on Quartz Matrix

. The flexible metal branches tipped with polished aventurine pebbles; the matrix with clusters of purple amethyst crystals. 563 grams, 18 cm (7 in.). Ex Mineral Imports, London, UK. Gregory, Bottley

. 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

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)

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 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

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 Specimens. Near matched pair of deep purple Amethyst cathedrals. Not only are these geodes stunningly beautiful, they also give off a vibration of po

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

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

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 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

Title: A 100% Natural Pyrite Crystal CUBE on Matrix! Spain 57.1gr Gemstones: Pyrite Carat Weights: 285 Carats Size/Dimensions: Reserve: $20.00 Shipping: Domestic: Flat-rate of $10.00 to anywhere withi

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 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

. 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 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

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]

Title: Natural Quartz Crystals On Matrix Weight: 1600 Grams Origin: Pakistan Materials: Specimen Size: 170 x 114 x 95 mm Tratment: Natural No Reserve: This lot starts at $1 and has no reserve as a cou

A well formed prismatic piece of quartz with black anatase (titanium dioxide) crystals to the surface with handwritten label reading: 'Anatase on Quartz, Handangervidoa, Hondaland, Norway'. From Handa

A large freeform-cut piece of very fine, transparent quartz, finely faceted with a needlelike rutile crystal embedded in it, in white card tray with label reading: 'RUTILATED QUARTZ FREEFORM'. From th