Heavy, solid and substantial, this is a statement piece necklace for sure! The tag indicates this is by Off Park Collections. A quick trip to Google says the following:
“The Off Park® Collection is an exclusive, affordable fashion jewelry line featured on JTV (Jewelry Television). Inspired by upscale, bold Park Avenue, New York City trends, it features vibrant, statement-making pieces like crystal earrings, necklaces, and jewelry sets designed by Tony Malvagna.”