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and Brazilian material is especially well known in the mineral trade for its warm color range
Dimensions for Ring Size (US): 9
Use with light oil or water as a lubricant for best performance and blade life
Under normal light
the Independent Book Publishers Association
Wolframite - Specimen Ontario mineral and Brazilian material is especiallyMined from: Panasqueira Mine, Castelo Branco District, Portugal Description: This one of a kind Wolframite mineral specimen from Portugal displays a dramatic cluster of deep black, metallic looking crystals with strong vertical striations and stepped, blocky growth. The specimen has a bold architectural form, with several intergrown blades and tabular faces rising at different angles. Its dark iron black color, reflective luster, and sharply ridged