From Moscona Mine, Villabona District, Asturias, Spain. Very aesthetic cluster of yellow crystals of cubic fluorite with a colorless calcite crystal perched on the top edge and drusy quartz overgrowth.   5 lbs, 6 x 6 x 4 inches

From Edong Mining District, Daye, Hubei, China   Large cluster of scalenohedral calcite with a secondary coating of lustrous iridescent metallic chalcopyrite crystals on the surfaces. Bright and lively specimen with a scintillating surface.   3.20 lbs, 6.5'' x 4'' x 4.75''

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15...

From Tegana Formation, North Africa Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15 metric tons.This tooth is from a large Carcharodontosaurus...

From Tegana Formation, North Africa Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15 metric tons.This tooth is from a large Carcharodontosaurus...

From Quincy Mine, Hancock, Keweenaw Peninsula Copper District, Houghton County, MichiganLustrous translucent parallel scalenohedral calcite crystals with metallic copper inclusions on matrix. The copper inclusions are visible throughout the crystals.*Custom Lucite base shown included with purchase1.25 lbs, 4'' x 3.5'' x 2.5''

Cluster of genuine electric-green fluorite crystals on Matrix. This rare African specimen displays large gemmy crystals, with top luster. A fine collector piece.    3.6 lbs, 6.5 x 4 x 3.5 inches

Cluster of genuine electric-green fluorite crystals on Matrix. This rare African specimen displays large gemmy crystals, with top luster. A fine collector piece.    6.4 lbs, 6.5 x 4 x 5 inches

Cluster of genuine electric-green fluorite crystals on Matrix. This rare African specimen displays large gemmy crystals, with top luster. A fine collector piece.    8.8 lbs, 6 x 4 x 6.5 inches

This is a slice of fossilized dinosaur bone with one side polished to a mirror finish. This specimen is a fossilized dinosaur bone in which the original fossil material has been replaced by silica, exposing the inner cell structure of the bone. The impurities within the silica is how this...

This is a slice of fossilized dinosaur bone with one side polished to a mirror finish. This specimen is a fossilized dinosaur bone in which the original fossil material has been replaced by silica, exposing the inner cell structure of the bone. The impurities within the silica is how this...

This is a slice of fossilized dinosaur bone with one side polished to a mirror finish. This specimen is a fossilized dinosaur bone in which the original fossil material has been replaced by silica, exposing the inner cell structure of the bone. The impurities within the silica is how this...

From Dalnegorsk, Primorskiy Kray, Russia   Highly lustrous stacked cluster of translucent manganese rich faint pink calcite crystals. The calcite crystals are scalenohedral formation with double terminations and striated crystal faces.   1.80 lbs, 5.5'' x 4'' x 3''

Spinosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosaurus is one of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates ranging between 12 and 13 m (39-43.5 ft) and weight estimates between 6 and 15...

From Nasik District, Maharashtra, India   Penetrating twinned crystals of transparent golden yellow calcite with silky luster faces and sharp terminations. The twin orientation is well defined and visible throught the termination faces.  2 lbs, 5 x 4 x 3.5 inches

From Moscona Mine, Villabona District, Asturias, SpainAesthetic penetrating cubic formation of transparent to translucent golden yellow fluorite crystals on matrix.   4.6 lbs, 7 x 5 x 4 inches

From Moscona Mine, Villabona District, Asturias, SpainAesthetic penetrating cubic formation of transparent to translucent golden yellow fluorite crystals on matrix.   9.2 lbs, 10.5 x 6 x 4.75 inches

From Moscona Mine, Villabona District, Asturias, SpainAesthetic penetrating cubic formation of transparent to translucent golden yellow fluorite crystals on matrix.   6.8 lbs, 9 x 3.5 x 4.75 inches

From Moscona Mine, Villabona District, Asturias, SpainAesthetic penetrating cubic formation of transparent to translucent golden yellow fluorite crystals on matrix.   2.6 lbs, 6 x 2.5 x 4 inches

From Moscona Mine, Villabona District, Asturias, SpainAesthetic penetrating cubic formation of transparent to translucent golden yellow fluorite crystals on matrix.   3.4 lbs, 7.5 x 3 x 5.5 inches

From Moscona Mine, Villabona District, Asturias, SpainAesthetic penetrating cubic formation of transparent to translucent golden yellow fluorite crystals on matrix.   2.2 lbs, 8 x 1.5 x 3.5 inches

From Moscona Mine, Villabona District, Asturias, SpainAesthetic penetrating cubic formation of transparent to translucent golden yellow fluorite crystals on matrix.   4.4 lbs, 9 x 2.5 x 6 inches