The OCEANGRAM BLACK CHIP IPYG SILVER NECKLACE features an 18K gold-plated sterling silver chain. This necklace includes a 1 cm monogrammed charm in black. The chain is adjustable to 35, 40, or 45 cm, and it secures with a lobster clasp. The monogrammed charm is crafted from recycled ocean plastic, certified by #tide ocean material, and designed for personalized initials. Features: 18K Gold-Plated Sterling Silver Chain: Provides a polished and lasting finish. Adjustable 35-40-45 cm Length: Offers adaptable sizing for varied styles. 1 cm Monogrammed Charm: Features personalized initials and is made from recycled ocean plastic. Ocean Sustainability: Crafted from ocean-bound recycled plastic certified by #tide ocean material.