18" Gold-Plated Rectangle Charm Necklace with Ruby and Red Crystal

Etsy - zarataylor

Gold chain type and color, Rectangular red faceted stone pendant, Small white accent stone above the main pendant (highly consistent with source glint), Ornate/textured gold frame around the red stone, Overall size and proportion of the pendant

14K 10K 8K Solid Gold Bauguette Rectangle Ruby Pendant Necklace

Etsy - QueenjewelryTurkey

Delicate gold chain type, Rectangular red stone, Simple, enclosed bezel-like pendant setting, Integrated bail design, Similar overall size and aesthetic

Jared 1/4 Ct tw Rectangle-Cut Ruby Pendant Necklace in 14K Yellow Gold

Jared Jewelers

Gold chain color, Rectangular red stone, Similar overall size