The Astra necklace is inspired by the representation of comets documented in art throughout history. It's made from solid sterling silver which has been polished matte to contrast 3 gorgeous moonstones in the comet trial. The comet trial spikes dangle from the back of the necklace so this is a mover and shaker! This necklace measures 75mm from the very top point of the star to the end of the longest spike. It is 25mm wide. It has been hallmarked in the assay office of Dublin Castle and hangs from a sterling silver chain that is 18".