![](http://www.alamy.com/thumbs/6/E37D630E-2399-4FD1-9A5B-8175AEADDBE1/2DH7YKX.jpg)
wolframite, a tungsten cousin used in lightbulb filament manufacturing
Size: 4288px × 2848px
Photo credit: © WireStock / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: black, bulb, collection, crystal, ferberite, filament, gaslight, gem, gemstone, geology, incandescent, iron, light, lightbulb, manganese, manufacturing, metal, metallic, mineral, minerology, natural, ore, precious, rock, sample, scheelite, science, silicate, specimen, stone, tungstate, tungsten, tunstate, wolfram, wolframite