This Silver ring contains a Carnelian cabochon gemstone, The bezel setting is gold plated and the silver has a hammered texture. The  band has a gap at the back and therefore os slightly adjustable and would fit finger size R or S . It is not designed to be squeezed smaller or pulled to a larger size. 

Carnelian is a form of chalcedony formed as a result of the rapid cooling of lava after a volcanic eruptions.  Due to this rapid cooling crystals are not able to grow , therefore it is a microcrystalline quartz stone. 

It has been found in Bronze Age sites dating 1800B.C. Carnelian was used by the Romans to create individually designed signet or seal rings. Sealed documents had  the senders emblem stamped into the wax. 

It is the birthstone for Virgo, Leo and Aries. Said to bring stability , stimulate motivation , develop self belief and success.