The jewelry hallmark "MX" stamped inside an oval belongs to the designer brand Anatoli (officially known as Anatoli Jewelry).
Details About the Piece
• The Brand: Anatoli Jewelry, founded by designer Anatoli Dashkin, is widely known for creating high-quality sterling silver jewelry often featuring multi-strand chains, intricate filigree style work, and classical Greek or Byzantine-inspired motifs.
The Strands: The image shows multi-strand rows of faceted, translucent mineral beads.