Vintage cluster leaf brooch (unverified maker)

This is a vintage costume jewelry brooch featuring a dimensional cluster of molded turquoise-colored plastic or glass leaves set against a gold-tone metal base. The piece exhibits a mid-century floral or autumnal wreath design, measuring approximately two inches across, composed of numerous navette or marquise-shaped cabochons with central carved ribs resembling leaf veins. Each element is prong-set into a branching gold-tone metal wire framework that creates layered depth and movement. There are no visible maker's marks, signatures, or patent numbers present on the visible front surface of the piece. The overall physical condition appears well-preserved, showing minor surface wear consistent with age, light patination on the gold-tone metal alloy, and no obvious missing stones. The stylistic characteristics are highly consistent with mid-20th-century costume jewelry production, specifically evoking the playful yet structured designs popular in the 1950s or 1960s by makers such as Accessocraft, Coro, or Lisner, though without a legible stamp, any specific brand attribution remains unverified and speculative.

Based on what I can see in the photograph, this vintage costume jewelry piece is a dimensional cluster leaf brooch featuring molded turquoise-colored elements and a gold-tone metal wire framework, measuring approximately two inches across. I can't verify from a photo the exact metal composition, the material of the leaves, or the presence of any faint, obscured maker's marks on the reverse side. Would need physical inspection to confirm whether the components are glass or plastic and to check for hidden signatures. The stylistic characteristics evoke mid-20th-century production popular in the 1950s or 1960s, reminiscent of designs by makers such as Accessocraft, Coro, or Lisner, though any specific brand attribution remains unverified. The basis for the value estimate of $75-150 assumes the piece is a quality mid-century costume item in the style of these popular makers, displaying well-preserved condition with only minor surface wear and light patination. General market conditions and demand for mid-century unsigned floral and wreath costume brooches remain steady among collectors of vintage accessories, though prices heavily depend on maker attribution. What would be needed to confirm authorship and exact age includes in-person examination, hallmark verification, and expert appraisal. If the attribution is incorrect and the item turns out to be a modern reproduction, replica, or a generic piece produced 'in the style of' rather than a vintage period item, the value would likely decrease significantly, typically falling into the $20-40 range for unbranded contemporary novelty jewelry.