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Triassic Period, 251-199 million years BP. A large cut and polished section of petrified tree trunk, showing deterioration of the outer layers of ...
Late Cretaceous Period, 100.5-66 millions years BP. A pair of fossil vertebrae of Sarcosuchus sp. crocodile. 250 grams total, 54-63mm (2 - 2 1/2"...
A cut and polished agate geode slice with variegated bands of dark brown and grey. 463 grams, 20cm (8"). From the historic ‘Victorian Museum’ or ...
A large specimen with a recess containing dark blue orthorhombic stromeyerite crystals; old collector's label to the reverse. 619 grams, 82mm (3 ...
Jurassic Period, 203-145 million years BP. A large free-standing slab containing a large quantity of fossilised Promicroceras marstonense ammonite...
A group of fifty peacock ore (bornite), specimens, each displaying beautiful iridescent colours. 745 grams total, 21-44mm (3/4 - 1 3/4"). From th...
A large sheet of grey mica with vitreous lustre. 42 grams, 13.5cm (5 1/4"). From the historic ‘Victorian Museum’ or later collection of Gregory, ...
A specimen containing clusters of small pale green selenite crystals; supplied in a display case with old collector's identification label. 51 gr...
A substantial cut section of a geode, the internal cavity with large well-formed amethyst crystals. 12.5 kg, 25cm (10"). From the historic ‘Victo...
A cluster of calcite crystals; supplied in a display case with old collector's identification label. 47.5 grams total, 59mm (box: 76 x 60 x 35mm)...
Over 500 carats of natural topaz, a group of fifty unpolished specimens in various sizes. 417 grams total, 13-36mm (1/2 - 1 1/2"). From the histo...
A rectangular shale panel with leaf-shaped formation of manganese oxide dendrites spreading out across the surface. See Bonewitz, Dr. R. L., Rocks...
A pair of cut and polished conglomerate 'puddingstone' consisting of coarse grained sedimentary rocks composed of rounded fragments embedded in a ...
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