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http://www.artofadornment.ca/catalog/product_info.php/products_id/591
Madam Muerte Rose Skull Cameo Convertible Necklace/Brooch
A creepy (yet somehow sweet!) white-on-black female skeleton profile resin cameo accented with 4 small red metal roses and 4 tiny sparkling light Siam ruby red Swarovski crystal rhinestones which form a necklace at her throat. Mounted in a gorgeous 2 1/4 inch (5.5cm) high antiqued pewter filigree setting. A silvertone locking bar pin is attached to the back, so the chain can be removed and the pendant worn as a brooch instead. Chain and lobster claw clasp are shiny silvertone rhodium-plated brass.
Length: 18" (45.5cm), adjustable