Collection of artificially grown crystals

This collection of crystals has been selected by the IUCr Commission on Crystal Growth and Characterization of Materials as examples of high-quality crystals grown artificially. If you would like to add your examples, please use the submission form.

The first set of images is selected at random from the complete collection. Use the options below these pictures to search or browse further. 

Protein crystals Protein crystals grown at pH around 2 (buffer is KCl buffered with HCl!) showing three different crystal forms (needles, plates and cubes). All three crystal forms diffracted X-rays beyond 1.8Å resolution!
 
Pascal
Cobalt Niobate This crystal was grown via the optical floating zone method. two sides consisted of perfectly flat facets, with a spiral-like structure on the other two faces. The tip is a polycrystal resulting from the termination of the floating zone and cooling.
 
Timothy Munsie
ytterbium yttrium aluminium oxide This is a (Yb,Y)3Al5O12 solid solution crystal grown by the Czochralski technique. The blue color is caused by Yb2+. The [Yb]/[Y] ratio is 4:1.
 
Steffen Ganschow
muf-7a Growing beautiful crystals like these is one of the joys of doing chemistry. These perfect specimens take the shape of a truncated rhombic dodecahedron. They are from a class of materials known as metal-organic frameworks, and they spontaneously grow from zinc metal ions and organic ligands. Although imperceptible at this scale, X-ray crystallography shows us that they have a sponge-like structure with large pores and voids. In fact, the internal surface area of a gram of these crystals is equivalent to an entire football field! These materials are being investigated for their ability to store gases such as hydrogen for powering next-generation vehicles. These photos were taken with a conventional optical microscope.
 
Lujia Liu
Gypsum Gypsum group, showing twinned crystals, obtained using gel crystallization.
 
César Menor Salván

 
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