Gold dust, Steel Grade : 22 Carats, 23 Carats, 24 Carats

We are offering african gold dust for sale.
specifications
1.high quality
2.competitive price
3.prompt delivery
physical property
color:
the beauty of the golden color can be compared with the sun, when gold is melted from the steam is green, it in the process of smelting gold is usually brown, if moulds a thin slice of it, it can transmit more green light.
malleability:
unusually strong. One ounce of gold can be pull in 50 steadily, its extension makes it easy casting, is a manufacturer of jewelry is good choice. Gold is the strongest force in the metal
forgeability:
supreme. Can cause a very thin easy to roll up the piece of gold. 1 oz gold hammer can be thin to 4 million per 1 feet thick and 100 square feet area is large.
gold color is golden yellow, metal luster, no cleavage. Hardness is 2 to 3, 19.3, of pure gold melting point is 1064.4 °c; good ductility, can be pressed into thin foil, high heat resistance and electrical conductivity, the resistance of the pure gold of 2.4 p. Has good resistance to chemical corrosion, of pure gold is one of the best plating material.
gold as a precious metal, has the good physical properties, the "true gold fears not the fire" is refers to under general flame gold does not melt easily. Density is big, feel chendian. Good toughness and ductility, good conductivity. Gold has a bright yellow, but color change is bigger, after mixed with other metals such as gold, copper alloy is dark red, silver alloy is pale yellow or gray. Gold is easy to be ground into powder, which is also the cause of gold are dispersed in the nature, the pure gold jewelry is easy to wear and reduce weight.
gold is a very soft metal, but less than two metals, lead and tin use nails can trace on pure gold, the softness that gold is easy to processing, but this is for the maker of the ornament, and it's not ideal, because it is easy to make ornaments rub and make it lose its luster that affect beautiful. So when made of gold jewelry, usually to add copper and silver, in order to improve the hardness.
gold easy to forge, easy to extend, it can be crushed into thickness is 0.001 mm, transparent and green gold foil. 0.5 gram of gold can be into a 160 - meter gold.
item name gold dust
origin burkina faso
purity 92.07%
quality 22 carats
density 18.18
moq 50kg
supply capacity 200kg
payment t/t,l/c
cleaning method
1,protect the luster of the gold ornaments, can thin coated with a layer of nail polish on it.
2,if the surface has black silver film, salt 2 g, 7 g baking soda, bleaching powder, 8 grams, 60 ml water, mixture "gold cleaner", put the gold jewelry in a bowl, pour into detergent, 2 hours later, remove gold jewelry, (preferably not hard water) rinse with clear water, buried in sawdust drying, then wipe with a soft cloth.
3,jewel-encrusted ring matches with a popsicle or roll a piece of cotton, mixed liquid in toilet water and glycerin wetting, scrubbing the gem its framework, then use flannelette polished ring. Avoid by all means use blade sharp objects to scrape.
4,salt and vinegar mixture is cleaner, use it to wipe the pure gold jewelry, can make the endure and remain fresh forever.
5,toothpaste wipe or with hot thick rice water scrubbing, also can restore luster
main function
gold is the metal of human early discovery and use of. Due to its rare, special, and valuable, since the ancient times is regarded as the hardware, with the title "king of the metal, enjoy other metal incomparable reputation. Because of gold have such status, for a long time has always been a symbol of wealth, is widely used in financial reserves, money, jewelry, etc. Along with the development of human society, gold and commodity economic status application is constantly changing. Its financial reserves and monetary function in adjusting, as goods return. But with the rapid development of modern industry and science and technology, the application of gold in these areas are gradually expanding.
1.as international reserves
2.value function
3.avoid risk
4.used for jewelry
5.the application of industrial technology
character
cooked is raw gold after smelting and refining of gold, the generally high purity, density is small, some can be directly applied to industrial production. Common with gold bars, gold bullion, gold bullion and various accessories, ware, gold and industrial use of gold, gold, gold plate, etc. Due to different purposes, the colour is different, or because they had no purification equipment, and purification of fusion not only, or mention the purity is not enough, form the gold looks different. People's habits according to the colour of the gold is divided into pure gold, red gold, 3 kinds of color of gold. After purification achieve quite high purity gold as pure gold, assaying the fineness of gold generally refers to achieve 99.6% above, of pure gold.
pure gold and pure phase close to, but because of the different time and place, pure gold standard is different, the international market to sell gold, colour is 99.6% pure gold. And in red gold generally between 99.2% and 99.6%.
color gold, also known as the "gold", "gold", refers to the gold looks very low. These gold due to other metal content, high colour was 99%, and the low of only 30%.
according to contain a different division of other metals, rare gold can be divided into clear color, mixed color, gold, k gold, etc. Only in clear color symbolically gold mixed with silver composition, no matter the colour generally referred to as the clear color gold. Clear color gold, more common in gold bars, gold bullion and gold jewellery, gold bullion, and various kinds of vessels.
mixed color gold is gold silver material, also containing copper, zinc, lead, iron and other metals. According to the content of metal type and quantity is different, can be divided into small mixed gold, big mixed gold, bronze, gold, lead big mixed gold and so on.