DescriptionNiobium-bead.jpg English: Niobium bead with oxide layer, size: 6mm. Deutsch: Niob Schmelzperle mit Oxidschicht. Größe: 6 mm. Date 28 September...
DescriptionUltrapure niobium bead, slightly oxidized.jpg English: Niobium is a rare, soft, grey metal, which, when exposed to air, quickly forms a protective...
DescriptionMale Genital Piercing.jpg English: A human penis with a prince albert genital piercing, wearing a niobium captive bead ring with titanium ball. Date...
