Vtg Mid-Century Modern copper cuff bracelet w/green stones, likely from 1950s

This item is a vintage Mid-Century Modern copper cuff bracelet with green stones, likely dating from the 1950s. This style of jewelry was popularized by companies such as Renoir of California and Matisse.
Features and Identification
Material: The bracelet is made of genuine copper, which often develops a warm, reddish-brown color and may form a green patina over time.
Style: It features a Modernist design with a wide, hammered or textured cuff and a hinged clasp. The abstract, flowing shape is characteristic of mid-century artisan jewelry.
Stones: The green stones are likely green agate or glass cabochons designed to simulate malachite or jade. The specific material often depended on the manufacturer and price point.
Makers: Notable designers like Jerry Fels (Renoir/Matisse) and Francisco Rebajes specialized in this type of bold, sculptural copper jewelry. The presence of a signature (hallmark) inside the cuff would help confirm the exact maker.