Lost Necklace/Brooch

I lost a brooch/necklace this morning between Redcross Way and London Bridge station via Southwark Street, Borough High Street and St Thomas' Street. I was wearing it as a necklace today and it's a large yellow glass bug on a multi coloured cord. I have retraced my steps and asked at London Bridge Station and also contacted South Eastern lost property. Please could you keep an eye out as it is very dear to me. Thank you.