Dichroic Glass and Sterling Pendant/Necklace - Signed

Dichroic glass necklace/pendant with shades of blue and purple on a black background. The bail and chain are sterling. All parts of the chain are marked sterling and the bail is stamped 925, along with an unknown maker's mark. The glass measures approx. 1" x 7/8". Chain is a thin snake, approx. 18" with a spring ring closure. Very striking minimal modern design.