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Replacement Tiffany Lamp Shades: Sizes, Bases and Fit

How a leaded Tiffany-style shade sits on its base, how to size a replacement to the lamp, and what to check on a cracked or pre-owned glass shade.

By Art Deco Lighting editorial teamUpdated 4 min read7 sources

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A leaded glass lamp with a domed floral shade, Metropolitan Museum of Art
A leaded glass lamp with a domed floral shade, Metropolitan Museum of Art

A replacement Tiffany-style shade sits on its base, not on a harp: its top plate drops over a short threaded rod and a finial screws on to hold it. Measure that rod and the base height first, then size the shade. One shade seller pairs a 16 inch shade with a base about 22 inches tall.

How does a Tiffany-style shade attach to the base?

A Tiffany-style shade attaches differently from a fabric shade. Tiffany Shades Direct, a seller that specializes in glass replacement shades, explains that a Tiffany-style base has “a short rod” at the top, about 3/8 inch (10mm) across. The shade “sits with the rod through the top plate” and is held by the decorative finial.

The structure goes back to the originals. The Neustadt Collection describes how Tiffany’s workshop began each shade by setting a brass ring on top of the mold and finished it with a second brass ring soldered to the bottom edge. The top ring is what rests on the base’s cap, which is why a heavy glass shade can sit steadily on a single rod.

A lamp built for a fabric shade works another way. Grand Brass describes a harp as a metal frame, mounted below the socket, that supports and positions a shade. A leaded shade has no spider fitting to sit on a harp. Our vintage lamp shade guide covers harps and fitters for fabric shades.

Before a pre-owned base goes back into use

A pre-owned base may have old cords and sockets, so rewire it before the new shade goes on; the rewiring guide explains what to replace. A glass shade also sits close over the bulbs, and the CPSC advises: “Check the wattage of all bulbs in light fixtures and lamps to make sure they are the correct wattage.”

What size shade fits your base?

Base height is the easiest number to work from. Tiffany Shades Direct gives these pairings as a starting point:

Shade diameter Base
About 12 in. About 17 in. tall
About 16 in. About 22 in. tall
About 20 in. Floor lamp

Period lamps run a little larger. Christie’s collecting guide lists Tiffany Studios table lamps from 21 3/8 to 31 1/2 inches tall with shades of 16 to 21 1/2 inches; the full list is in our Tiffany-style lamp size table. A shade much wider than the base will look top-heavy and is easier to knock over, so stay close to these proportions when you buy a shade and base separately.

Replacement Tiffany-style lamp shades

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What should you measure before you buy?

Three numbers settle most fits:

  1. The rod. Measure the threaded rod’s diameter at the top of the base, and note its height above the sockets.
  2. The shade’s top opening. The hole in the top plate has to pass over the rod and rest on the base’s cap without wobbling.
  3. The shade diameter and height. Check them against the base height above, and against the sockets: bulbs should sit well inside the shade, clear of the glass.

Ask the seller for these numbers if a listing gives only the shade width. A finial with the wrong thread will not hold, and a top hole that is too large lets the shade tilt.

Should a period base get a new shade?

Think twice before putting a new shade on a period base. Christie’s notes that on period Tiffany Studios lamps “the base can be as important as the shade,” and that some designs always sat on one base. A new Tiffany-style shade on an old base makes a usable lamp but not a period one, and the pairing should be stated if the lamp is ever sold.

Every new shade is Tiffany-style, however well made: the Metropolitan Museum of Art dates Tiffany Studios to 1902 to 1932, and Christie’s notes that reproductions have been made since the 1970s. Our guide to real Tiffany or Tiffany-style explains the marks specialists look for.

Complete Tiffany-style table and floor lamps

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What should you check on a pre-owned glass shade?

Hold the shade up to a light, away from the base. Look for:

  • Cracked or missing pieces. Ask whether any glass has been replaced, and price a repair by a stained-glass studio before you bid on a damaged shade.
  • Loose solder lines or a bent rim. The bottom ring keeps the shade’s shape, so a dent there is worth a question.
  • A sound top plate. The cap carries the shade’s whole weight on the rod.

Slag glass shades, with their streaked opaque panels, often appear beside Tiffany-style ones. The identification guide explains what slag glass is and how to date those lamps.

Slag glass and leaded lamps

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Lead in leaded glass

The Virginia Department of Health lists “came and solder used in making stained glass” among sources of lead. Wash your hands after handling or cleaning a leaded shade.

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Frequently asked questions

Will any Tiffany-style shade fit my lamp base?

Only if the base is built for one. A Tiffany-style base has a short threaded rod above the sockets; the shade's top plate drops over it and a finial holds it. A base made for a fabric shade and harp needs a different shade or an adapter.

What size Tiffany shade should I buy?

Start from the base height. One shade seller suggests a 16 inch shade for a base around 22 inches tall and a 12 inch shade for a base around 17 inches. Period Tiffany Studios table lamps had shades of 16 to 21 1/2 inches.

Can I buy a genuine Tiffany Studios shade on its own?

Period shades do come up at auction, but they are rare and the base often matters as much as the shade. Any new shade is Tiffany-style. Read our guide to telling the two apart before paying a period price.

How do I clean a leaded glass shade?

Lift it off the cooled lamp and dust it with a soft dry cloth or brush. The came and solder contain lead, so the Virginia Department of Health's advice applies: wash your hands afterward and before you eat or drink.

What holds the shade on?

A finial, which screws onto the top of the rod above the shade's cap. If yours is lost, a matching Tiffany lamp finial is a small part to replace; check the thread before you buy.

Sources

  1. Help with Replacement Glass Tiffany ShadesTiffany Shades Direct
  2. Making a Tiffany LampThe Neustadt Collection of Tiffany Glass
  3. Collecting guide: 10 things to know about Tiffany lampsChristie's
  4. Lamp, Tiffany Studios, about 1902 to 1918The Metropolitan Museum of Art
  5. Lamp Shade HarpsGrand Brass Lamp Parts
  6. Information for Adults (Lead Safe)Virginia Department of Health
  7. CPSC and NESF Urge Consumers to "Plug Into Electrical Safety"U.S. Consumer Product Safety Commission

Collection: Lamp shadesIntroduction: Art Deco Lighting: How to Recognize and Buy 1920s and 1930s Lamps

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