Numerous needle-like inclusions exhibit vibrant interference colors in a suite of pallasitic peridot from the Jepara meteorite.

A phenomenon resembling play-of-color was seen in a 4.13 ct unheated sapphire recently examined by the author.

Application of slight pressure perpendicular to the twinning planes reveals the unusual property of this synthetic gem.

Conspicuous bright brownish red crystals in ruby matrix are the first recorded observations of staurolite in corundum.

Afghani spodumene hosts an unidentified translucent orange crystal surrounded by an iridescent cleavage halo.

Orange crystal inclusion identified as the rare mineral triplite in a beryl from Pakistan.

Diamond inclusions are relatively common guests in diamond crystals.