Tourmaline - Specimen shark bone 5cmApproximate Weight of 1 Piece:

5cmApproximate Weight of 1 Piece: 180g

and when used in jewelry

retaining subtle variations that highlight the stone’s natural depth and origin

the valves are highly calcified

Kids can excavate and extract their own fossil from within a plaster block

Tourmaline - Specimen shark bone 5cmApproximate Weight of 1 Piece:Mined from: Cruzeiro Mine, So Jos da Safira, Minas Gerais, Brazil Description: This one of a kind Brazilian tourmaline specimen features thick, well developed prismatic crystals set in a dense quartz matrix. The tourmaline crystals range from deep forest green to nearly black, with strong longitudinal striations and a slightly glassy to submetallic luster. Several crystals run diagonally across the piece, creating a layered, structural look rather