emerald necklace 3d model

High-end luxury collar necklace in 18k white gold with emerald green gemstone accents. Structured rigid collar base, smooth rounded tube form at the back transitioning into geometric front section. Front design composed of symmetrical Art Deco inspired angular motifs. Alternating zig-zag and stepped rectangular elements. White sections micro-pavé set with round brilliant diamonds. Green sections channel-set with calibrated baguette emerald stones. Strong architectural layout, sharp edges, clean symmetry. Center drop pendant: one large emerald-cut green gemstone (octagonal shape), bezel set with double frame — inner frame micro-pavé diamonds, outer frame emerald baguette border. Small geometric connector element above pendant with diamond pavé. Solid metal body, realistic stone seats, proper prongs and channel walls. Metal thickness minimum 1.2mm, stone depth accurate for manufacturing. High-detail jewelry CAD model, clean topology, no textures, real scale in millimeters.