Natural History - Sphalerite Specimen

. 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 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

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 cluster of fine, lustrous pyrite crystals form the classic Peruvian locality, crystallising principally as pyritohedrons, with accessory nailhead calcite and a sprinkling of small sphalerites, in ol

Two natural history items, including: Placenticeras ammonite fossil, unearthed near Wasta, South Dakota; together with black tourmaline and quartz specimen; L: 11 1/4" (larger, approx.)

Various locations, c. 20th century; A framed taxidermy mount of a fruit bat (Rousettus Leschenaulti); skin of a Gila Monster; skull of a Muntjac; set of jaws from a large Ray (Guitar Fish); two turtle

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

23 Blue Fluorite crystal rocks from New Mexico. 2 Larger crystals and 21 Smaller. Natural History Specimen. Largest 6" x 7" x 4" From the estate of Frank Hall owner of Dover Scientific and collector o

8 Wavellite Pale Green hemispherical crystal rocks on Matrix from Arkansas. Natural History Specimen. Waverlite. Largest 7.5" x 6.5" x 3" From the estate of Frank Hall owner of Dover Scientific and co

23 Blue Fluorite crystal rocks from New Mexico. 2 Larger crystals and 21 Smaller. Natural History Specimen. Largest 6" x 7" x 4" From the estate of Frank Hall owner of Dover Scientific and collector o

Collection of 18 Pink Pastel Halite Gems - Pink cubic Rock Salt Crystals. Natural History Specimen. Please Note: Water will dissolve Halite Crystals. Largest is 5.5" long From the estate of Frank Hall

Collection of 18 Pink Pastel Halite Gems - Pink cubic Rock Salt Crystals. Natural History Specimen. Please Note: Water will dissolve Halite Crystals. Largest is 5.5" long From the estate of Frank Hall

5 Sylvite Orange Salt Crystals from Imperial, California. Natural History Specimen. Largest is 8.5" x 7" From the estate of Frank Hall owner of Dover Scientific and collector of rocks, crystals, miner

35 pieces of Copper from Arizona. Coppery red native copper in interesting shapes from Arizona. Natural History Specimen. Lot also includes a bag of copper in Selenite from Arizona. From the estate of

Collection of 12 Hemimorphite rock crystals. Natural History Specimen. White crystals on rust colored matrix from Mexico. Largest 6.25" From the estate of Frank Hall owner of Dover Scientific and coll

6 Angel Wing Calcite crystal rocks from Durango Mexico. 6 Natural History Specimens. Largest 8" x 5" x 3.5" From the estate of Frank Hall owner of Dover Scientific and collector of rocks, crystals, mi

Lot of two natural specimen fossils encased in stone matrix. Measure from 1/4" - 3 3/4" in height x 4 1/4" - 5" in length. No apparent markings. Condition: Good overall condition having normal surface

. 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,

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

Natural history mineral specimen of toucans with gilt metal feet, perched on a rock, with stolomite, amethyst, obsidian and other stones. On black dolomite base, retailed by Amsterdam Sauer. [10 x 10

Natural history mineral specimen of toucans with gilt metal feet, perched on a rock, with stolomite, amethyst, obsidian and other stones. On black dolomite base, retailed by Amsterdam Sauer. [10 x 10

Natural history Obsidian mineral specimen, large with natural inclusions and smoothed surface. 2.75" H X 13" W X 11.5" D.

An exceptionally fine mushroom-shaped moldavite specimen with classic ablation melting, accompanied by polished pebbles of amethyst and jasper. See Bonewitz, Dr. Ronald Louis, Rocks & Minerals, 2008,

A specimen of vanadinite with calcite, the vanadinite crystals transparent and lustrous, from Mexico, in old white card tray with handwritten label reading: 'Durango, Mexico'. From Durango, Mexico; fr