Latest Rapaport report says outlook for festive period is mixed.
Diamond company buys 25% stake in auction service biz Curtis Fitch.
Company's CCO for diamonds Jean-Marc Lieberherr transfers to new role.
Recycled diamond firm says move is a positive for UK trade prices.
Police say they were not notified about high-vale exhibition.
Lone man carries out one of France's largest diamond robberies.