* Gold generally means yellow gold, which is one of the precious metallic elements, and chemically symbolized by the symbol Au, and it takes an atomic number in the periodic table, which is 79, and tibr is the natural state of gold before it is manufactured or struck, and it is characterized by softness and luster, and it has a yellow color, and is commonly used  People have it in the form of a currency unit, and it is also used in the manufacture of jewelry and jewelry, and it can be found in nature in the form of grains in the bottoms of rivers and rocks, and gold is often found accompanied by copper and lead.

 Yellow gold is an element that can crystallize, and it takes the octagonal shape.  It is found in the form of unorganized sheets.  The specific weight of gold ranges between 15.6-19.3.  It is classified from ductile and ductile metals.  Its yellowing degree varies according to the percentage of silver mixed with it.  Eutectic, as it melts at a temperature of 1063 degrees Celsius.  Insoluble with acids and royal water.  Uses The precious gold metal is used in a number of uses due to its unique properties such as ductility, ductility, malleability, ease of formation, and corrosion resistance, so gold has become popular in use as is the case in jewelry making,

 * Such as making gold teeth, treating bone infections with a gold solution, treating some types of cancer with radioactive gold, and finally, investing in the form of ingots.

 * There are conflicting sayings and opinions about whether white gold is the same as platinum, but some opinions indicate that white gold is not gold in the first place but rather a metal of platinum, and it is considered more expensive than yellow gold, but there is a similarity between it and yellow gold in terms of  Properties,

 * White gold that is extracted as a product of mixing gold with other minerals such as copper, palladium, and silver. The rulings of gold and silver are applied to it according to the percentage formed by each of these metals within white gold.  Platinum, and it is not considered gold in the first place, so the provisions of yellow gold and silver do not apply to it.  The difference between white and yellow gold The difference between white and yellow gold lies in the type of alloy used in their manufacture.

 * In addition to the purity of gold or its carat, it is noteworthy that white gold is yellow gold to which other minerals have been added to it, palladium, nickel, zinc and silver to become a distinctive white color.  Of yellow gold, due to the addition of rhodium plating, which gives it durability and strength.