New guidelines are published after six year negotiation, but dealers will have to provide written contracts with artists when acting on consignment

High-profile shows are breaking down the boundaries between designers and artists

Sales to the Upper East Side set may take their time at the New York fair, but they do happen and exhibitors praise its slick presentation and diverse offering

Newcomers seize on a “logical place to be”

Brooklyn fair waives stand fees, charges a commission on sales instead

Lack of supply dogs London and Hong Kong and guarantees are down over 50% as former chief operating officer Adam Chinn apparently joins the Mugrabi dealing family

From Rachel Weisz to Anne Pasternak, art loving VIPs arrived on Randall's Island

A Dutch double portrait from Frank Stella's collection led the New York auctions by fetching $10m

Follow our tweets tagged #TANsalestally for notable purchases from Frieze New York and the surrounding fairs

New commercial gallery shows—from a new space in south London to an apartment show in San Gimignano

Two works from the private collection of renowned New York dealer Herman Schickman hit the auction block today after being loaned and lost from the Met's collection

Plus, Mark Zuckerberg and other tech bros as Greek and Roman gods

In the internet age, pre-selling at fairs is commonplace but collectors are unlikely to stop buying in person any time soon

Once the cultural darling of South America, the country's capital is now a shadow of its former glory as artists and dealers struggle in the face of a military uprising

This edition of the fair has a special section of virtual reality and augmented reality works

After contending with flooding in 2017 and a heatwave last year, some major players are heading for the Armory instead

Opening up about his traumatic experiences as a young man, he says the industry must act to improve transparency and diversity

After settling with dealer Mark Weiss, Sotheby’s is still trying to recoup losses after refunding US buyer of the painting

After cancelling its New York event, the organisation's new Chicago Invitational will feature around 40 galleries in the historic Chicago Athletic Association

Nomadic, collaborative and pop-up models are all showing in the new "Invited" section of the Belgian fair, but is it too little, too late?

Sale marks the end of legal battle over ownership between the US art investment firm and the non-profit Dutch fair group

New laws to stop copyrighted material from being uploaded to social media without permission could pose problems for those using sites like Instagram to sell art

US dealer Gary Snell and Paris-based Robert Crouzet found guilty in French court of making and selling copies of works by the French sculptor

Estimated to fetch $7-$10m, the New York cityscape, depicts the iconic Central Park statue of the playwright

The firm announces a $7.3m group investment, following the acquisition of Auction Club and partnerships with Christie’s

Our picks from upcoming fairs and auctions in the next fortnight

Laura Paulson, formerly of Christie's, to head up new business, while her husband Andrew Fabricant has been promoted to the new position of chief operating officer

London case surrounding Brueghel painting raises questions over whether a work's full sales history should be listed—even when that shows a big markup

Less is more in the internet age, says organiser of fair which has dropped from 210 exhibitors to 176

Dealers mount work that responds to political tensions while noting art is a 'difficult business' in Havana