Rare silicon sample.
Rare silicon sample.
Etched high purity silicon cube (approx. 1 1 1 cm) showing beautiful grain boundaries.
Beautiful dendritic crystalline silicon metal sample. Rare silicon sample. Please note the unit cell of graphic paper is 5mm.
Beautiful titanium crystal bar made by Van Arkel-de Boer process. Crystal bar with snap ends showing complex and beautiful crystalline structure.
This is a very attractive rhenium specimen for your periodic table collection. This rhenium specimen measures approximately 32mm*14mm*12mm, weighing 110g, very close to theoretical density (majority of readily available rhenium specimens are sintered, only at 90-95% theoretical density). It has two polished mirror-like surface and two matt surface length-wise, together with two EDM cutting surface at two ends. Please note the unit cell of the graphic paper is 5mm.
electrolysis made chromium crystals. very rare appearance for chromium metal. They are not easily available vanadium crystals, albeit they look quite similar. Listing price is for ONE ampoule only. Please note the unit cell of the graphic paper is 5mm.
It’s an absolutely STUNNING tungsten crystalline bar, made of wolfram hexafluoride/hydrogen process. You can see very fine ORIENTATED crystalline structure on the surface of the bar, with very shinny metallic texture, sparks like diamond when rolling around. This is a very compact form of tungsten metal, very rare tungsten specimen, really hard to find one. It’s NOT sintered material. 140 gram. Please note the unit cell of graphic paper is 5mm.
Purity is 99.9%, length 60mm, width 42-46mm, thickness 5mm, weight 90-95g.
Acid etched high purity niobium cube (approx. 2*2*2 cm) showing beautiful grain boundaries. Listing price is for ONE cube ONLY. Please note the unit cell of the graphic paper is 5mm.
Etched high purity silicon cube (approx. 1 1 1 cm) showing beautiful grain boundaries.
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