Noble or not, metal has been at the heart of the Maison Christofle's business since its foundation. A quick overview.
Gold, the definition of noble metal, is almost unalterable. Relatively soft, it is almost never used pure. The alloy with other metals gives it the necessary resistance and the desired color. Maison Christofle uses it for its goldsmithery, its jewelry and the decoration of some porcelain and crystal models.
For jewelry, the alloy used is 75% gold mixed with copper and silver, called 750 thousandths (18 carats). The higher the proportion of copper, the more pronounced the pink tint of the gold. White gold, on the other hand, is an alloy of gold and silver. To avoid tarnishing, Christofle's white gold is rhodium-plated.
Malleable, ductile, shiny, silver is the goldsmith's favorite noble metal. Maison Christofle uses it to produce usual and decorative items as well as jewelry.
As gold, silver is too soft to be used pure. For solid silver, Maison Christofle uses an alloy with a minimum of 93% silver and copper, which guarantees the title of 925 thousandths. However, to silver items, silver is used 99.9% pure.
Pure silver granaille
Sterling silver horse
These metals are used most of the time in the creation of the various alloys that the goldsmith uses.