large amethyst crystal geode cluster, with well-defined crystals of various sizes, upon a carved wooden stand

Polished ammonite plate, formed of individual ammonites age; Jurassic period, D20cm

Estimate £80-120

Polished petrified wood dish, some growth rings still visible, texture to edge, H5cm L23cm

Estimate £50-80

Pair of ammonite fossil, mounted upon a rectangular wooden base, age; Cretaceous period, l...

Estimate £160-180

Pair of aragonite spheres, D7cm

Estimate £50-70

Three polished brown agate geodes, largest H13cm, L18cm

Estimate £50-80

Four polished blue agate geodes, largest H10cm, L18cm

Estimate £30-50

Six fossilised fish (Knightia alta) in four matrix; Eocene period, location; Green River F...

Estimate £40-60

Polished petrified wood dish, texture to edge, H5cm L24cm

Estimate £30-50

Polished petrified wood dish, some growth rings still visible, texture to edge, H5cm L16cm

Estimate £30-80

Three purple agate slices, polished with rough edges, of various sizes largest H7cm, L10cm

Offer Guide £40-60

Pair of orthoceras fossil towers, age: Devonian period, location: Morocco, larger tower, H55cm

Offer Guide £140-180

Pair of vases, of baluster form upon a stepped foot, with shell inclusions within the lime...

Offer Guide £100-150

Two Crinoid slabs, age; Mississippian period, location; Gilmore City Formation, Iowa, larg...

Offer Guide £50-80

Four purple agate slices of various sizes, polished with rough edges

Offer Guide £30-50

Pair of sodalite spheres, D7cm

Offer Guide £50-80

Agate crystal geode cluster, in black and brown tones, H19cm

Offer Guide £60-80

Pair of cinnabar spheres, D6cm

Offer Guide £40-60

Agate crystal geode cluster, in blue and purple tones, H9cm

Offer Guide £30-50

Polychrome jasper specimen egg, in creams, browns and earthy tones, H12cm

Offer Guide £70-100

Septarian dish, with a calcite centre and argonite/siderite lines within limestone rock an...

Offer Guide £100-150

Agate geode, with quartz crystals druzy, in earthy tones, H13cm

Offer Guide £50-70

Pair of Dugway geode, natural edged bookends, in purple tones, H16cm

Offer Guide £50-80

Agate crystal geode cluster, in brown and white tones, H7cm

Offer Guide £30-50

Septarian slice, polished, with a calcite centre and argonite/siderite lines within limest...

Offer Guide £30-50

Large Megalodon (Otodus Megalodon) tooth fossil, with fine serrations in a matrix, age; Mi...

Offer Guide £120-160

Megalodon (Otodus Megalodon) tooth fossil, with fine serrations, H11.5cm

Offer Guide £80-120

Large Megalodon (Otodus Megalodon) tooth fossil, with fine serrations age; Miocene period ...

Offer Guide £140-180

Megalodon (Otodus Megalodon) tooth fossil, with fine serrations, H10.5cm

Offer Guide £80-120

Megalodon (Otodus Megalodon) tooth fossil, with fine serrations, in matrix age; Miocene pe...

Offer Guide £80-120

Megalodon (Otodus Megalodon) tooth fossil, with fine serrations, H10.5cm

Offer Guide £80-120

Large agate crystal geode cluster, in blue, brown and cream tones, H18cm

Offer Guide £120-160

Pair of angelite spheres, D6cm

Offer Guide £50-70

Polished petrified wood dish, some growth rings still visible, texture to edge, H5cm L24cm

Offer Guide £40-60

Pair of blue red slices, polished with rough edges, H14cm

Offer Guide £30-60

Agate crystal geode cluster, in blue and white tones, H12cm

Offer Guide £40-60

Agate crystal geode cluster, with crystals to the centre, in brown and grey tones, H7cm

Offer Guide £30-50

Hardstone dish in the form of a leaf, L10cm

Offer Guide £15-40

Five blue agate slices, polished with rough edges, H9cm, L7cm

Offer Guide £30-50

Agate crystal geode cluster, with crystals to the centre, in brown and grey tones, H8cm

Offer Guide £50-70

Large calcite sphere, D14cm

Offer Guide £100-120

Pair of angelite spheres, D6cm

Offer Guide £40-60

Pair of pink tourmaline spheres, upon carved wooden bases, D5cm

Offer Guide £50-70