# Rhenium single crystal bar and 1cm3 cube

- By: Alchemist-hp (talk) (www.pse-mendelejew.de)
- Date: 2010-09-25
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Rhenium_single_crystal_bar_and_1cm3_cube.jpg)
- Rights: [FAL](http://artlibre.org/licence/lal/en)
- Picture: https://upload.wikimedia.org/wikipedia/commons/thumb/7/71/Rhenium_single_crystal_bar_and_1cm3_cube.jpg/1920px-Rhenium_single_crystal_bar_and_1cm3_cube.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

Three high-purity forms of rhenium metal: a single crystal (99.999% pure) made by the floating-zone process, an e-beam remelted bar (99.995% pure), and a 1 cm3 cube (99.99% pure) for comparison.