Dainty Green heart stone vintage pendant, gold filled layering 18” necklace

Small green heart pendant on an 18-inch gold-filled chain. Dainty and gorgeous, the stone may be jade or aventurine, though the exact type is unknown. There is some wear, flaws, and fading, and it needs cleaning. Sold as-is with a gift box. Perfect for adding a touch of vintage charm. See pictures for details. Props not included. Materials, unknown, and untested.