baryte — species of mineral; data; faceted specimens exist …
basalt — a common extrusive igneous rock formed from the rapid cooling of basaltic lava exposed at or very near the Earth’s surface …
bastnäsite-(Ce) — species of mineral; see bastnäsite-(Ce) in ‘Classification’ …
bauxite — an aluminium ore; the world’s main source of aluminium …
benitoite — species of mineral; see benitoite in ‘Classification’ …
beryl — species of mineral; see beryl in ‘Classification’ …
beryllonite — species of mineral; data …
binghamite — a rock; see binghamite in ‘Classification’ …
biotite — a series or subgroup of the mica group …
bloodstone — variety of chalcedony; see bloodstone in ‘Classification’ …
bowenite — variety of antigorite; see bowenite in ‘Classification’ …
brazilianite — species of mineral; see brazilianite in ‘Classification’ …
briolette — type of cut in faceting a gemstone; usually associated with round shape …
bromellite — species of mineral; data; high quality faceted specimens reported (McClure, Muhlmeister, 2002) …
brookite — species of mineral; data; faceted specimens exist …
burbankite — species of mineral; data; faceted specimens exist …
bustamite — species of mineral; data; faceted specimens exist …
bytownite — variety of anorthite; данни; see bytownite in ‘Classification’ …
