Bonhams, London, the South African Sale, 9 September

Retailers need to do more to protect buyers from fraudsters selling fakes as online art businesses attract more investment

Magnus Resch conducted ten-year study

Some say an international treaty will be fairer for all, others that it will mainly benefit the famous and dead

Bank gets €28m from sale of Paris mansion

Blum & Poe show features works by three ceramicists who experiment with ancient techniques

This was the controversial suggestion of a recent survey. We asked its author and four art-world figures to comment

Frieze talk will look at the ways artists are adapting to rising costs and redevelopment in the capital

The artist has instructed a new legal team separately to his former dealer as appeal is lodged in The Hague

Record sales in New York boost the market, while anti-corruption crackdown hampers Asian buyers, Artprice report reveals

Report says business has doubled to $10bn in four years

Falls in private sales, Russian art and London auctions dent otherwise strong performance; Sotheby's sales also flat

Collectors are learning to love wall drawings as a new generation of artists embraces them

Art worth more than $1m was looted after Swiss housekeeper sold duplicate key

Tornabuoni Art will inaugurate sixth space with Lucio Fontana solo show

Dealers from Mayfair and beyond open their doors today for the event’s third edition

Sotheby's sale in aid of non-profit Birmingham institution raised £785,000

The Cultivist also aims to support museums around the world

Why support has come from an unlikely corner