Gold - Origin & Gold content (Carats)
Origin and Origin of Gold - Goudstof Goudklompje GoudaderOrigin / Origin of Gold. Gold is one of the treasures, often found in places where there have been volcanoes in the past, and comes from hot, liquid magma that is inside the earth. When magma cools down, it becomes hard and rocky. Sometimes gold is produced that can occur in various ways in the earth:
Gold dust - The name for gold in very small particles
Nuggets - Gold in nuggets, also called 'nuggets'
Gold vein - Gold that is in the ground in a long, narrow layer.
Gold veins - Rivers Seas Oceans. Gold veins often lie in places where there have been volcanoes in the past. Gold is found at the bottom of some rivers, because the water coming from the mountains carries the grains of gold. When the river water flows slowly or stands still, the gold particles sink to the bottom. There is also gold in the seas and oceans. On average, every cubic meter (1000 liters) of seawater contains about 0.03 milligrams of gold.
Where is the most gold found?Gold finds in the World. In the last century (1900 - 2000) the most gold was found in Africa. A lot of gold is also found in the United States, Australia, China, Canada, the Russian Federation, Peru, Uzbekistan, Indonesia and Brazil. A European country where the most gold is extracted from the soil is Romania. There is no gold in the soil in the Netherlands. Gold has always played an important role throughout human history. It is suspected that it is the first metal known to man. For example, gold jewelry is already known from the Stone Age and gold coins were already used during the 7th century BC.
Features of Puur Goud - 24 Karaats
- Pure gold cannot rust or corrode
- Gold can be melted and shaped to almost any design
- Pure gold has a warm yellow color
- Gold has a hardness of 2.5 to 3 on the Mohs scale
- Another color comes from mixing with other materials, called alloy
- Mixing with other metals is also done to strengthen the gold
- The gold content of the alloy is indicated in carats (see below)
- Carat is a number that indicates how much twenty-fourth part consists of gold
- Pure gold is 24 carat, 12 carat gold consists of half gold and half of another metal.
Gold content Gold value - Carat HallmarkGold content - Gold value . The term Carat (the letter K) is used to express the gold value. The higher the number indicated by carat, the higher the gold content or the purer the gold.
A lower carat number indicates that it is a partially golden composition, where a certain part or percentage is a different material or metal (see elements & metals).
What does Carat mean - How much is Carat?Carat - Carat. Carat with a K indicates the purity of the gold. (Carat with a 'C' indicates the size of a gem, see further * below). Pure or pure gold is rare, as it is very soft. This is the reason that there is often an alloy with other metals, so that something can be made of the gold. The alloys (added metals) make the color, hardness or malleability of the gold improve. Carat stands for the quality designation of gold, which means the ratio of gold to the alloy (added metal). This is also called gold content. Carat is therefore the number of parts of gold on 24 parts of an alloy or: 24-carat gold is pure gold (24/24). Below you can see it at a glance.
|24 carats||1000/1000||24/24||100 %|
|22 carats||916/1000||22/24||91,6 %|
|20 carats||833/1000||20/24||83,3 %|
|18 carat||740/1000||18/24||75 %|
|14 carats||585/1000||14/24||58,5 %|
Dutch Guarantee Guarantee - Gold and Quality MarkThe Dutch Guarantee Guarantee concerns a check of all objects made of precious metal in the Netherlands. A hallmark or stamp is given to every gold item or piece of jewelry.
If, for example, the hallmark (in the form of the number) is 833, it is 20 Karat gold. For example, gold with the number 585 is 14 Carats, etc. In the Netherlands, 24 Carats to 14 Carats can be called gold. 9 carats can also be called gold in England. In the Netherlands, this percentage of gold in the alloy is considered too low to qualify it as gold.
Gold colors - Yellow Gold - White Gold - Red Gold - Green Gold - Blue and Gray Gold
- Yellow gold. Yellow gold is basically the natural and pure color of gold. Color variations can also be obtained by a small amount of other materials. Generally this is 50% copper and 50% silver
- White gold. White gold has a somewhat cooler appearance and contains alloys such as nickel, zinc, copper, tin, paladium or manganese. Because of this addition, white gold is always a bit more expensive than yellow gold
- Red gold. At Red Gold, with a warm romantic look, there is usually an alloy with copper
- Green gold. Green gold is gold with a large amount of silver or cadmium
- Blue gold. Blue gold is gold with some iron
- Gray gold. Gray gold has an addition of 5 to 20% iron.
Precious stones and carat. * Carat with a C stands for Carat with Gemstones, but this is also referred to as Carat. With precious stones, the word carat indicates the weight of the stone. Since 1907, the weight of precious stones has been given in metric carats, with the following values: 1 metric carat = 1 carat = 0.2 gram or 5 carat = 1 gram.