Black Onyx Necklace 9k Gold Clasp Vintage Art Deco c1920



Fantastic vintage bead necklace in black onyx dating from the Art Deco period with a 9ct yellow gold bolt ring clasp. The gold mark can be found to the one side of the clasp. Good secure clasp with a good spring.
Length 39.7 cm or 15.6 inches.
Width 0.3 cm or 0.1 inches.
Weight 6.9 grams or 4.4 penny weight.