This is a handcrafted jewelry piece featuring a smooth, polished black oval cabochon stone—likely black onyx—bezel-set in a solid metal base with a thick integrated bail tube. Similar vintage modernist artisan pieces are commonly crafted from 925 sterling silver, often originating from artisan silversmiths or regions like Taxco, Mexico. 

Design Features

• Stone: Smooth domed (cabochon) black onyx.

• Setting: Flush bezel mount on a rounded plate.

• Bail: Wide cylindrical loop designed to accommodate thicker chains or collars.

• Metal: Silver (typically stamped 925 sterling silver)

  Based on recent marketplace listings for this exact style of vintage piece, the resale value for this type of vintage sterling silver black onyx pendant generally ranges between $40 and $75