Florentine bronze is a modern term for a type of

bronze Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals (such as phosphorus) or metalloid ...

d metal. Prior to 1828, the primary artificial bronze used for copper and copper alloys was antique green of various shades. A metal colouring called "Florentine bronze" was introduced by a French man named Lafleur around 1828 and soon became popular. A variation, Florentine fremé ("smoked" bronze), was introduced by another French man named Camus in 1833. The

alloy An alloy is a mixture of chemical elements of which in most cases at least one is a metal, metallic element, although it is also sometimes used for mixtures of elements; herein only metallic alloys are described. Metallic alloys often have prop ...

is usually formed as a mixture of

aluminium Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...

tin Tin is a chemical element; it has symbol Sn () and atomic number 50. A silvery-colored metal, tin is soft enough to be cut with little force, and a bar of tin can be bent by hand with little effort. When bent, a bar of tin makes a sound, the ...

(<10%) and

copper Copper is a chemical element; it has symbol Cu (from Latin ) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orang ...

(>90%). Currently no chemical formula for Florentine bronze has been made as it is an alloy which is not standardised (in proportions) worldwide. "Florentine bronze" bears no relation to the 16th century

reductions of full-scale sculptures that were made in

Florence Florence ( ; ) is the capital city of the Italy, Italian region of Tuscany. It is also the most populated city in Tuscany, with 362,353 inhabitants, and 989,460 in Metropolitan City of Florence, its metropolitan province as of 2025. Florence ...

after models by

Giambologna Giambologna (1529 – 13 August 1608), also known as Jean de Boulogne (French), Jehan Boulongne (Flemish) and Giovanni da Bologna (Italian), was the last significant Italian Renaissance sculptor, with a large workshop producing large and small ...

and other

Mannerist Mannerism is a style in European art that emerged in the later years of the Italian High Renaissance around 1520, spreading by about 1530 and lasting until about the end of the 16th century in Italy, when the Baroque style largely replaced it ...

sculptors, to satisfy a collectors' market.

References

Copper alloys Bronze {{alloy-stub