Distorted calcite guest crystal with 'treacle' colour swirls in unheated Mogok Ruby. Calcite

is a common inclusion in Mogok rubies and treacle is a unique inclusion to these rubies.

 Clusters of apatite guest crystals in unheated Mogok Ruby.

Un-dissolved rutile 'silk' in unheated Mogok Ruby. This inclusion is evidence

the ruby has not undergone high temperature heat-treatment.

Apatite and calcite guest crystals reflecting on the internal

facets of an unheated Mogok Ruby.

A cluster of apatite guest crystals in an unheated Mogok Ruby.

Guest crystals in unheated Mogok Ruby.

Treacle colour swirls in unheated Mogok Ruby, an inclusion unique to Mogok rubies.

Calcite guest crystals with treacle colour swirls in unheated Mogok Ruby.

Calcite guest crystals with treacle colour swirls in unheated Mogok Ruby.

Calcite guest crystal in unheated Mogok Ruby.