Sodalite is an opaque ocean blue stone, sometimes with white flecks.
This one is rose cut, which means it has multiple little facets cut all over it to catch the light and give depth to the stone.
The ring is crafted from sterling silver, the band is a slender 2mm round, and the 8mm diameter gem is set using 4 claws to allow maximum light to flow through it.
It is a size J-