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Anticrepuscular rays are spectacular optical phenomena that are quite rare and they require the viewer to have his or her back to the sun or sunset point. They are columns of sunlit air streaming through gaps in clouds. Yet while the former seem to converge from the sun, anticrepuscular rays converge toward the antisolar point, the point in the sky directly opposite the sun, creating some stunning effects. (Source) 

Cassini: Saturn, June 12th 2016

W00099641.jpg was taken on 2016-06-12 07:28 (UTC) and received on Earth 2016-06-12 14:57 (UTC). The camera was pointing toward SATURN, and the image was taken using the CL1 and IR1 filters. This image has not been validated or calibrated. A validated/calibrated image will be archived with the NASA Planetary Data System.

Image Credit: NASA/JPL-Caltech/Space Science Institute

Enceladus, the sixth-largest moon of Saturn

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Mimetite

Locality: Filón Sur, Tharsis, Huelva, Andalusia, Spain

Pipe Nebula

Dark Blue Azurite on Limonite

Locality:  Touissit, Touissit District, Jerada Province, Oriental Region, Morocco.

The Porpoise Galaxy

Azurite & Malachite

Locality:  Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA

Fluorite

Locality: Hesselbach Mine, Hesselbach, Baden-Württemberg, Germany