The White gold is also known as the (platinum), and Platinum is a chemical element symbol PT in the periodic table, and is classified among the transition metal elements.
it has some physical properties like hardness, magnetic appeasement, and had a tensile strength of the 125-245 element Gigabascal, and bulk modulus of 230 Gigabascal, and a boiling point of 3825 c, and the degree of melting 17680c.
the origin of the platinum (Plata), is a Spanish word that means (small silver), a precious metal, and color gray white, features a platinum largest iron metal strongly but its flexibility, such as gold.
The advantage of this metal is hardness and rustproof, and has to
maintain its luster when exposed to air capacity, due to the fact that platinum does not react with oxygen, is not affected by acids that dissolve other metals. Platinum and melted using a mixture of nitric acid and hydrochloric acid, and combine with the arsenic, silicon, and is characterized by white gold high value compared with yellow gold, as it may be worth double the value of gold.
The use of platinum (white gold):
Platinum is used in many fields, used by chemists in laboratories to conduct some scientific experiments Kamabh samples various acids, and enters the work of panels and thin wire, and also enters in the industry (catalytic converter) which is found in car exhaust. And use his common entry in the jewelry industry because of its strength and hardness, may enter in dental and surgical instruments industry.
There are two types of white gold, the first type of extracted gold and other metals as silver, palladium, copper, and the second type have been manufactured from the same platinum without mixed with other elements (pure) platinum. For the first type is not permissible for adornment by men, and is subject to zakaah it should also be in gold and silver, and the second type of pure white gold can be worn by men, but without exaggeration in it.
