Vintage black enamel and hand-painted floral Victorian brooch - pinchbeck or gold plated with cut steel beaded border fish The reverse of the clasp

The reverse of the clasp is stamped silver Mexico

This is a heavy piece the chain alone having an overall weight (including the extra link and clasp to attach a pendant) of 45 grams (43 grams without the extra link and clasp)

5 inches but could be fastened with its spring ring clasp for a slimmer fit

If it is indeed chrysoprase

I believe it is rock crystal rather than glass due to its provenance and what I have been told about the piece

Vintage black enamel and hand-painted floral Victorian brooch - pinchbeck or gold plated with cut steel beaded border fish The reverse of the claspHand painted early Victorian floral design on black enamel on canvas background with cut steel beaded border. I am guessing this was early Victorian due to the style of the piece and the painting, though it is possible it is earlier as cut steel was used so much in the Georgian period. So many styles of jewellery used this type of floral painterly design on a black background in the 19th and early 20th centuries, including Italian micro mosaic or