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| Silver Lusterware |
| Find out how to make the distinction between authentic silver and these platinum-coated English ceramics |
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Exquisitely turned handles and delicate finials
complement the craftsmanship of the glazing on a Regency-style teapot in
the foreground and a pitcher and coffeepot in the rear. Notice the small
chip at the base of the teapot, which reveals the red clay underneath. (Photo: Becky Luigart-Stayner) |
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Three creamers show some of the variety found in the
designs. It may be difficult to discern upon first glance that they are in
fact pottery. (Photo: Becky Luigart-Stayner) |
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by Suzanna Cullen Hamilton
"The English are predisposed to pride, the
French to vanity," wrote Swiss philosopher Jean-Jacques Rousseau in
the 18th century. The following century, English pride could be attained
much more affordably with a sparkling new form of ceramic. Metallic luster,
the silver variety in particular, was invented by John Hancock at Josiah
Spode's manufactory, imitating more expensive Sheffield silver and
bringing a new dimension to the candlelit tables of the less well-to-do.
Lusterware is pottery or porcelain that is fired in a
kiln with a metallic overglaze for iridescence. Though luster was often
applied in a "resist" technique, leaving certain areas of the
piece unglazed for decorative effect, some of the most beguiling pieces
were lustered in their entirety, adopting the look of the finest wares.
Depending on the color desired, platinum,
copper, or gold was chemically dissolved and applied either by brushing or
dipping. The unmistakable look of silver was achieved using platinum, while
copper yielded a copper or brown look, and gold could achieve gold, pink,
or lavender. It was noted that silver luster could be brighter than the
most highly polished silver. With age and normal use, the glaze takes on
the look of slightly tarnished silver, but the patina is not as dark and
black as true silver tarnish.
The process of applying metal oxides to pottery dates
back to the eighth century in the Middle East. But it wasn't until
the mid-18th century that platinum was discovered, and the Spode factory in
England became the first to apply this precious metal to earthenware. The
product, known as silver luster or English luster, was unique to
19th-century England as a means of offering a more affordable "poor
man's silver" to a broader market. Later, other factories such
as Wedgwood produced the ware.
The most widely produced forms of silver luster in
the early 19th century were tea and coffee sets, which were likely used
only for formal afternoon tea. It is somewhat incredible that 200 years
later, ceramic pieces with turned finials, scrolled handles, and sharply
detailed spouts survive without damage and remain on the market.
WEB EXTRA: Irrestible sliver luster pieces with resist designs »
| JUST THE FACTS |
Characteristics: Silver luster is earthenware coated
in a platinum glaze, originally designed to mimic Sheffield silver. It is
also known as metallic or English luster.
Origins: The technique was developed in England
around 1800 by a craftsman named John Hancock, who practiced at the Spode
manufactory.
The process: To make the lustering compound, platinum
was dissolved in aqua regia (a mixture of hydrochloric acid and nitric
acid). The solution was then mixed with spirits of tar, applied over a
glazed vessel, and fired in a kiln.
Where to find it: Antiques stores, major auction
houses, and Internet auctions.
Authentication: Early silver luster, which was
typically smooth with little or no decoration, is one of the more difficult
types of lusterware to reproduce because it takes such a masterful hand to
perfectly cast the pottery. But fakes do exist. Many original pieces were
not marked, so other methods must be used for authentication. The most
obvious discrepancies are in the shape and luster; reproductions will be
cruder than originals, and the luster not as bright. A careful study of
period designs will help you tell an original from a reproduction.
Expect to pay: Prices range from the low thousands
for a mint condition period tea set to less than $100 for single pieces
with minor chips or imperfections.
Care: Keep lusterware clean and dust-free; the
cleaner it is, the better it will reflect light. But don't use strong
chemicals, as these will cause the luster to wear thin in patches. |
RESOURCES: All lusterware from Robert Hill Antiques, 205/326-0088.
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