heart-shaped costume jewelry brooch in the mid-century style

This piece is a heart-shaped costume jewelry brooch featuring an ornate, textured gold-tone metal frame. The central component is a heart-shaped element with a smooth, pearlescent or faux mother-of-pearl finish displaying a marbled, cream-and-white pattern with subtle intersecting lines. Surrounding the central heart are alternating round turquoise-blue glass rhinestones and small white faux pearls set into the decorative, filigree-like metalwork border. Physical examination from the photo reveals standard age-related patina on the gold-tone metal, including mild surface wear and slight darkening in the recessed areas. There are no visible maker's marks, signatures, or stamps apparent on the front of the piece, though markings may potentially exist on the reverse side which is not visible in the photograph. Because no maker's mark is directly readable from this angle, hedged language is used for the identification. Stylistically, the piece is consistent with mid-20th-century costume jewelry production, often associated with the retro or vintage costume accessory eras of the 1950s to 1970s. Craftsmanship indicators include prong-set stones and structured metal casting, though this remains an unverified stylistic attribution subject to in-person physical inspection.

Based on what I can see in the provided photograph, this mid-century style heart-shaped costume jewelry brooch features a textured gold-tone metal frame, a marbled cream-and-white faux mother-of-pearl central element, and an outer border adorned with turquoise-blue glass rhinestones and small white faux pearls. Stylistically, the piece aligns with vintage costume accessories commonly produced during the mid-20th century. However, I can't verify from a photo whether the materials or the potential maker's marks on the reverse are extant, as the back is not visible. I would need physical inspection to confirm the quality of the metal casting, stone settings, and any possible maker attribution. The estimated value range of $45 to $90 assumes the stylistic attribution is correct and that the piece is in well-preserved vintage condition with minimal metal patina loss and all stones intact. General market demand for mid-century costume jewelry remains steady among collectors of vintage accessories, though values fluctuate based on condition and brand recognition. To establish authenticity and a precise value, an in-person examination by a qualified jewelry appraiser is necessary to check for hallmark verification and material composition. If physical inspection reveals that the item is a later reproduction, replica, copy, or merely made in the style of the period rather than a period-authentic piece, the market value would likely decrease significantly to the $15 to $30 range.