These rings are known as nomadic, belonging to the Pashtun people of the Afghanistan/Pakistan area.  Silver is used at a reasonably good level, and coloured glass is popular in bezels.  The rings are often colourful or dramatic...
 

   RING #1 - size 9.5   $34.US.   (sold)

   RING #2 - size 9.5   carnelian   $42.US.

   RING #3 - size 8   $48.US.   (sold)

   RING #4 - size 8   $48.US.   (sold)

RING #5 - size 8.5   $40.US.

RING #6 - size 8   $48.US.   (sold)

   RING #7 - size 9   $45.US.   (sold)

RING #8 - size 7.5   $36.US.   (sold)

   RING #9 - size 9   $34.US.   (sold)

RING #10 - size 9.5   $36.US.   (sold)