Comprising four different size halves, each with a cut frontal edge exposing a crystal lined internal cavity. 2.57 kg total, 9-16.5 cm (3 1/2 - ...

Miocene Period, circa 25 million years B.P. Comprising two polished examples. 282 grams total, 68-73 mm (2 5/8 - 2 7/8 in.). [2, No Reserve] From...

Carboniferous Period, circa 3 million years B.P. A long section from a droplet containing a spider and other insects. 11.3 grams, 12.5 cm (4 7/8 ...

Cretaceous Period, 145-65 million years B.P. Comprising six Mosasaur prognathodon teeth set on a composite matrix. 1.55 kg, 20.5 cm (8 in.). [No ...

Comprising thirty-two irregular specimens. 2.25 kg total, 28-48 mm (1 1/8 - 1 7/8 in.). [32, No Reserve] Ex Mineral Imports, London, UK. Gregory...

Devonian Period, circa 400 million years B.P. A shallow bowl formed from fossiliferous stone containing Orthoceras sp. specimens. 229 grams, 12.2...

Comprising one hundred intergrown crystal clusters. 1.12 kg total, 18-28 mm (5/8 - 1 in.). [100, No Reserve] From Huanuco, Peru. Ex Mineral Impo...

Cretaceous Period, circa 100-66 million years B.P. Comprising two Onchopristus numidus sawfish rostral teeth. 17 grams total, 56-59 mm (2 1/4 - 2...

Comprising fifty light green specimens. 2.72 kg total, 39-65 mm (1 1/2 - 2 1/2 in.). [50, No Reserve] Ex Mineral Imports, London, UK. Gregory, B...

Each displaying grey or brown banding in contrasting colours. 1.71 kg total, 66-72 mm (2 5/8 - 2 7/8 in.). [10, No Reserve] From Brazil. Ex Mine...

Comprising ten cut geode sections with exposed internal cavities. 917 grams total, 53-91 mm (2 1/8 - 3 1/2 in.). [10, No Reserve] From Brazil. E...

Comprising eight large parallelepiped specimens displaying typical birefringence and cleavage lines. 2.26 kg total, 53-70 mm (2 1/8 - 2 3/4 in.)...

Comprising eleven large opaque specimens. 2.16 kg total, 55-79 mm (2 1/8 - 3 1/8 in.). [12, No Reserve] Ex Mineral Imports, London, UK. Gregory,...

Comprising twenty parallelepiped specimens showing typical birefringence. 248 grams total, 13-31 mm (1/2 - 1 1/4 in.). [20, No Reserve] Ex Miner...

Pleistocene Period, circa 250,000-24,000 B.P. Displaying both sides of the Ursus spelaeus lower jaw with molars and lower canines present; some re...

Comprising twelve white to grey scalenohedral specimens. 968 grams total, 7.4-12.8 cm (2 7/8 - 5 in.). [12, No Reserve] From Brazil. Ex Mineral ...

Eocene Period, circa 56-33 million years B.P. Comprising three matrices, each with a Otodus obliquus tooth. 720 grams total, 7.7-12 cm (3 - 4 3/4...

20th century A.D. A restrung designer necklace of 1920's style composed of river pearls and facetted fan-shaped stones with moulded caps set with ...

Late Cretaceous Period, circa 70-66.5 million years B.P. An irregular mass of fossilised dung. 72 grams, 57 mm (2 1/4 in.). [No Reserve] From a L...

Pliocene Period, 5.2-2.5 million years B.P. From Carcharocles megalodon polished, showing some good enamel. 78 grams, 79 mm (3 1/8 in.). [No Rese...

Jurassic Period, circa 199-145 million years B.P. A slice of orange petrified wood with one cut and polished face. 1.6 kg, 17 cm (6 1/2 in.). [No...

Comprising: a geode section with large deep purple amethyst; a geode section with small amethyst crystals; hematite ore section. 3.28 kg total, ...

A large section of white stalagmite displaying natural rippling. 6.15 kg, 38 cm (15 in.). [No Reserve] Ex West Country, UK, collection, 1990s.Ti...

Each displaying intergrown crystals displaying typical striations. 1.66 kg total, 10-10.5 cm (4 - 4 1/8 in.). [3, No Reserve] From Peru. Ex Mine...

Late Permian-Early Triassic Period, circa 252-250 million years B.P. Showing the acephalic skeleton of the extinct genus of diapsid reptile, on a ...

Comprising fifty large, rich pink specimens. 4.93 kg total, 45-94 mm (1 3/4 - 3 3/4 in.). [50, No Reserve] From Madagascar. Ex Mineral Imports, ...

Jurassic Period, circa 199-145 million years B.P. A cut and polished section of petrified wood trunk. 770 grams, 14 cm (5 1/2 in.). [No Reserve] ...

Silurian Period, circa 445-416 million years B.P. Comprising Scyphocrinus elegans specimen and remains of another one with multiple stalk sections...

A large mass of intertwined prismatic crystals in intense dark purple colour. 5.15 kg, 29 cm (11 3/8 in.). [No Reserve] From Brazil. Ex Mineral ...

On an amethyst geode matrix; the metal branches tipped with polished citrine pebbles. 523 grams, 21.5 cm (8 1/2 in.). [No Reserve] From Brazil. ...

Devonian Period, circa 417-354 million years B.P. Cut to a heart shape and polished to reveal the internal structure. 212 grams, 74 mm (2 1/8 in....

Comprising one hundred prismatic, green to yellow apatite crystals. 97 grams total, 5-25 mm (1/8 - 1 in.). [100, No Reserve] From Durango, Mexic...

Comprising twenty roughly cut geode sections, each with well-formed purple amethyst crystals. 1.65 kg total, 40-69 mm (1 5/8 - 2 3/4 in.). [20, ...

Comprising four slices displaying red and grey banding, and two translucent dyed slices. 694 grams total, 12-16.5 cm (4 3/4 - 6 1/2 in.). [6, No...

Comprising unpolished sample with red ruby crystals in green zoisite and black hornblende. 1.11 kg total, 18-40 mm (3/4 - 1 5/8 in.). [50, No Re...

Early Jurassic Period, circa 170-168 million years B.P. An irregular matrix containing a large Androgynoceras maculatum, bivalves and other fossil...

Comprising: calcite, hemimorphite on limonite(?), and calcite in iron rich matrix. 905 grams total, 7.1-12 cm (2 3/4 - 4 3/4 in.). [3, No Reserv...

Comprising large irregular specimens displaying mainly pearly lustre. 4.31 kg total, 9.3-12.9 cm (3 5/8 - 5 in.). [13, No Reserve] Ex Mineral Im...

Cretaceous-Eocene Period, circa 70-45 million years B.P. A glazed display case with mounted specimens of various teeth, vertebrae and ray palates,...

Yellow specimens with some red areas, each set in foam in a labelled cardboard specimen tray. 146 grams total, 14-26 mm (1/2 - 1 in.). [12, No R...

Ordovician Period, circa 510-445 million years B.P. Comprising three fragmentary specimens. 218 grams total, 72-92 mm (2 3/4 - 3 5/8 in.). [3, No...

A large group of mainly clear and white prismatic crystals, some twinned. 652 grams total, 33-79 mm (1 1/4 - 3 1/8 in.). [20, No Reserve] From B...

Each cut to a triangular shape with sloping edges, mainly displaying blue and purple colours. 628 grams total, 26-35 mm (1 - 1 3/8 in.). [50, No...

Mainly Jurassic-Cretaceous Period, 200-66 million years B.P. A large group containing various ammonites, gastropods and bivalves, some with identi...

Comprising three sections with one polished face displaying mainly white, red and grey banding. 1.22 kg total, 7.8-14.1 cm (3 - 5 1/2 in.). [3, ...

A large group of cut agate geode halves, each with an exposed crystal-filled internal cavity. 670 grams total, 18-38 mm (3/4 - 1 1/2 in.). [100,...

A translucent slice of crazy lace agate showing clear contrasting banding, one end with two differently sized 'eye' formations resembling the fac...

Comprising a graduated series of restrung lentoid-section discoid beads with modern hook-and-loop fastener. 77 grams, 45.5 cm (18 in.). [No Rese...

Pleistocene Period, 2.6 million-11,700 years B.P. Restrung using recently polished Mammuthus primigenius bone beads. See Guide to the Elephants (R...

Devonian Period, circa 400 million years B.P. An irregular display with polished Orthoceras specimens. 1.58 kg, 21.3 cm (8 3/8 in.). [No Reserve]...

Three wind-rounded pebbles each in a hollowed out 'nest'; with a hessian draw-ribbon pouch. 735 grams total, 62-86 mm (2 1/2 - 3 3/8 in.). [3, N...

Each in a labelled box, comprising: quartz from Corinto, Minas Gerais, Brazil; crystalline malachite from D.R. Congo; sphalerite and pyrite from ...

Each with a minimum of one polished face to display attractive banding, some with drilled piercing. 334 grams total, 23-35 mm (7/8 - 1 3/8 in.)....

Eocene Period, circa 56-33 million years B.P. Comprising an Otodus obliquus tooth in a display frame. 15.5 grams, 50 mm (52 grams total, 12.7 cm ...

Fell 6000-5000 years B.P. A nickel-iron meteorite (IAB). 27.9 grams, 32 mm (1 1/4 in.). [No Reserve] From a Lincolnshire, UK, collection.A crater...

Each prismatic and displaying a very deep purple colour. 1.87 kg total, 4.1-10.8 cm (1 5/8 - 4 1/4 in.). [8, No Reserve] From Brazil. Ex Mineral...

Cretaceous Period, circa 145-66 million years B.P. Cleoniceras besairiei showing the internal structure of the shell. 74.8 grams, 67 mm (2 5/8 in...

Carboniferous Period, over 3 million years B.P. A polished section containing an ant and other inclusions. 1.66 grams, 21 mm (3/4 in.). [No Reser...

Comprising large irregular chunks of mainly clear quartz. 1.56 kg total, 25-47 mm (1 - 1 7/8 in.). [100, No Reserve] From Brazil. Ex Mineral Imp...

With a cut window displaying dense acicular rutile inclusions. 344 grams, 10.4 cm (4 1/8 in.). [No Reserve] Ex Gregory, Bottley & Lloyd (Gregory...