Calcite from Castelinho Mine, Alto Uruguai, Rio Grande do Sul, Brazil lolite sphere Dimension: 6 x 6 x

Dimension: 6 x 6 x 10 inches

mosasaurs became the dominant marine predators

Dimensions: 7 x 4 x 6 inches

sharp "Porcupine" calcite cluster

The piece has been painstakingly prepared with mechanical tools to expose all of the individual ammonite fossils on one side

Calcite from Castelinho Mine, Alto Uruguai, Rio Grande do Sul, Brazil lolite sphere Dimension: 6 x 6 xFrom Castelinho Mine, near Frederico Westphalen, Alto Uruguai, Rio Grande do Sul, Brazil Colorless translucent scalenohedral calcite crystals on matrix with crust of green celadonite microcrystals. The calcite crystals have matte luster and have small rhombohedral faces at the tips. Weight: 6. 5 lbs, Dimension: 12 x 5 x 7 inches