Victorian Garnet Cabochon Snake Locket Brooch stained glass The knot is formed in

The knot is formed in the shape of a heart

Length (from top of wires): 3

Length with chain: 5

and Victorian style floral details along with the word CHARMS on the other

With (quite a few) second/third/fourth opinions I'm pretty confident it's from the first half of the 20th century

Victorian Garnet Cabochon Snake Locket Brooch stained glass The knot is formed inDATE: Victorian, c. 1860 A large, juicy garnet cabochon is the main event of this cool antique brooch. The stone displays a deep hue, with flashes of lighter red when moved in the light. A gold snakes head and tail meet at the side of the garnet, creating an eternal loop that wraps around the entire piece, with a locket compartment to the back. Modelled in 15 karat yellow gold, it dates from the Victorian period and can be worn with the brooch