Then it became a museum in 1972, with a permanent collection of Tiffany glass.

Since then, Tiffany glass has soared in popularity and value.

The conservatory, which is made of Tiffany glass, was renovated in 1975.

Now I believe it's the largest piece of Tiffany glass in the world.

Two of its eight stained glass windows are believed to be Tiffany glass.

Her pursuit of 20th-century French decorations and Tiffany glass continued into the late 1980's.

The space is a symphony of Tiffany glass, mother of pearl and marble.

Fortunately, she wrote, "much detail remains, and fake Tiffany glass can be removed.

The home today contains 50,000 artifacts: manuscripts, historic photographs, family furnishings, and Tiffany glass.

They are full of ads for tapestries, frescoes, Tiffany glass and decorating advice.