Mid-20th-century style floral brooch with molded glass and rhinestones

This circular costume jewelry brooch features a dense, multi-layered design stylistically consistent with French couture jewelry of the mid-20th century. The outer ring is composed of numerous petal-like, dark teal-green molded glass or resin 'fingers' radiating from the center. The core of the piece is an ornate cluster containing a ring of clear, prong-set chaton rhinestones surrounding an assortment of small cabochons and faux pearls in shades of pink, blue, white, and burgundy. The construction appears to be built upon a metal base, visible through the center as a gold-tone mesh or filigree. While the user notes the item 'says France on the back', this marking is not visible in the provided image and remains unverified. If present, a 'MADE IN FRANCE' stamp would be consistent with pieces produced by mid-century boutiques such as Maison Gripoix or those commissioned for designers like Christian Dior, though this requires in-person authentication. The item shows signs of age include surface dust accumulation and slight dullness to some of the foil-backed rhinestones, but the molded elements appear intact. The identification is considered a hypothesis based on visual aesthetics as the maker's mark is not captured in the photo.

Based on my visual analysis of the provided image, this brooch reflects the intricate construction and material language associated with mid-century French couture costume jewelry. The dense arrangement of molded glass petals and the specific use of various cabochons suggest a piece potentially from a workshop such as Maison Gripoix or a similar boutique house. Per user submission, the item is noted to bear a 'France' mark on the reverse; however, as I cannot see this mark in the photo, I must treat the attribution as a hypothesis. I cannot verify from a photo if the piece is a period original or a high-quality later production in the same style. The estimated value of $450 - $850 assumes the 'France' mark is consistent with period-appropriate hallmark stamps and that the materials are indeed poured glass rather than modern resin. This range reflects general market demand for identified French couture accessories, which often command a premium due to their craftsmanship and association with major fashion houses. If a physical inspection by a specialist in costume jewelry were to find that the piece is a modern reproduction or lacks the claimed French hallmarks, the value would likely decrease significantly to a range of $75 - $150. Surface dust and minor dulling to the rhinestones are visible, which is common for an item of this purported age and should not drastically impact the value if the glass remains chips-free. To advance this appraisal, an in-person examination would be required to verify the metal composition, the specific method of glass attachment, and the exact typography of the maker's mark.