There cubes and there glass. I got this info from there site:www.contento.de
Fantasy combined with state of the art
precision laser technology creates the
exciting Clarisso® collection of accessory
Under the mirror smooth surface of pure,
handpolished optical glass, arise amazing
3D-images of unique beauty built out of
The great variety of images, developed
and produced by our own designers and
production plants are limitless.
You can also click on the Downloads on the first link, there is a page that has info that is in english, it's the Press Release PDF file. Also click the link with the Flyer.