10K Gold Cameo Brooch Pendant Vintage Antique

Vintage or Antique Cameo Pendant / Brooch.  Convertible between the two. Very classic design. Hallmarked 10K on brooch clasp. It is yellow color gold. I do not see any other hallmarks. This was found in a box with other older jewelry pieces. Working clasp and pendant bail opens and folds closed nicely. Brooch clasp is C shaped with a hook. Based on my research this appears to make this aged between 1890s-1920s. Please see last few photos. I am no way familiar with cameos nor am I an expert jeweler, so I cannot guarantee. I also am not sure if it is shell, ivory, stone, etc. Appears to be in great condition; please see photos. Collectable and timelessly chic! Very nice size for everyday wear. (*Pendant only no chain included)  Tags: boho bohemian art deco nouveau Victorian pin charm woman conch geekchic cottagecore feminine dress dressy lady profile jewelry pink orange white gold hippy hippie girlie girly sweater scarf bride bides wedding retro collector Edwardian old 1900s early 19th 20th century