Interior designer Katie Martinez offers professional advice on picking a carpet for any room.

Details are everything in these spaces, where the interior designers knew that a bold area rug, sumptuous upholstery or striking artwork would take a living room to the next level.

It's the best of both worlds — distinctive architectural details setting the stage for a mix of contemporary, vintage and antique furnishings. The resulting spaces are artfully eclectic, both stylishly edgy and comfortably classic.

The stone of choice for Napoleon, Princess Diana and Elizabeth Taylor has been a favorite of aristocrats and the well-to-do since the time of the Ancient Greeks. Learn how to shop for the bright blue gem, and why it's chemically impossible for a sapphire to turn red.

From Roberto Baciocchi’s “precious bedroom” to the Bismut brothers’ “arty video living room,” the interiors at this year’s Paris Mint event are wildly imaginative.

Taking a break from the Biennale des Antiquaires, top dealers and designers sipped champagne and dined on osso bucco to ring in 1stdibs' 15th year as a company.

Step inside the city's most stunning homes, from the sophisticated townhouses of the Upper East Side to the industrial-chic lofts of Tribeca.