Ciro of Bond Street London and New York were well known for their high-quality costume jewelry which included faux and cultured pearls, diamante and paste jewelry in both base metals, Sterling silver and 9ct gold. Unlike many imitation pearl makers, Ciro use glass beads instead of plastic.
You would need to get the item appraised to obtain an insurance valuation. Would be worth a valuation and CIRO costume jewelry is a good name brand name to invest in. How old is your necklace?
