Mosaic gold
Encyclopedia
Mosaic gold, or stannic sulfide, Sn
Tin
Tin is a chemical element with the symbol Sn and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows chemical similarity to both neighboring group 14 elements, germanium and lead and has two possible oxidation states, +2 and the slightly more stable +4...

S
Sulfur
Sulfur or sulphur is the chemical element with atomic number 16. In the periodic table it is represented by the symbol S. It is an abundant, multivalent non-metal. Under normal conditions, sulfur atoms form cyclic octatomic molecules with chemical formula S8. Elemental sulfur is a bright yellow...

2, is obtained as a yellow scaly crystalline powder, and used as a pigment in bronzing
Bronzing
Bronzing is a process by which a bronze-like surface is applied to other materials . Some bronzing processes are merely simulated finishes applied to existing metal surfaces, or coatings of powdered metal that give the appearance of a solid metal surface...

 and gilding
Gilding
The term gilding covers a number of decorative techniques for applying fine gold leaf or powder to solid surfaces such as wood, stone, or metal to give a thin coating of gold. A gilded object is described as "gilt"...

 wood and metal work. It was called by the alchemists
Alchemy
Alchemy is an influential philosophical tradition whose early practitioners’ claims to profound powers were known from antiquity. The defining objectives of alchemy are varied; these include the creation of the fabled philosopher's stone possessing powers including the capability of turning base...

 aurum musivum, or aurum mosaicum. It is also called bronze powder.

Alchemists prepared this by combining mercury
Mercury (element)
Mercury is a chemical element with the symbol Hg and atomic number 80. It is also known as quicksilver or hydrargyrum...

, tin
Tin
Tin is a chemical element with the symbol Sn and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows chemical similarity to both neighboring group 14 elements, germanium and lead and has two possible oxidation states, +2 and the slightly more stable +4...

, sal ammoniac
Sal ammoniac
Sal ammoniac is a rare mineral composed of ammonium chloride, NH4Cl. It forms colorless to white to yellow-brown crystals in the isometric-hexoctahedral class. It has very poor cleavage and a brittle to conchoidal fracture. It is quite soft, with a Mohs hardness of 1.5 to 2, and has a low specific...

, and flowers of sulfur, grinding, mixing, then setting them for three hours in a sand heat. The dirty sublimate
Sublimation (physics)
Sublimation is the process of transition of a substance from the solid phase to the gas phase without passing through an intermediate liquid phase...

 being taken off, aurum mosaicum was found at the bottom of the matrass
Matrass
A matrass is a glass vessel with a round or oval body and a long narrow neck, used in chemistry as a digester or distiller. The Florence flask of commerce is frequently used for this purpose. The word is possibly identical with an old name matrass for the bolt or quarrel of a cross-bow...

. It was recommended in most chronic and nervous cases, and particularly convulsions of children; however, it is no longer recommended for any medical uses.

Mosaic Gold is used in Indian Ayurvedic medicine under the Sanskrit/Indian name Suvarnavanga. It is used in complaints of the reproductive organs. It is indicated as a rejuvenator and a tonic of high potency which induces health, vigor, improves appetite, increases memory, generates semen of high quality, cures gonorrhea, spermatorrhea, and leukorrhea.

Suvarnavanga has been used as an aphrodisiac, brain tonic, antiemetic and in skin diseases, night sweats, diseases caused by the derangement of ‘vata’ and ‘kapha’. It improves the complexion. It also has anthelmintic property in addition to the above mentioned uses. It is an important ingredient in ayurvedic medicine against impotency.
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