So it was very troublesome and troublesome, to make it
easier to buy and sell, a king came up with the idea that gold should be minted
into coins of equal size. So, instead of every time people buy and sell, people
have to weigh it to see how much the gold weight is, now just take the coin out
and know how much it weighs, no need to weigh and measure. And the coin is
called a Mark, but is there anything special about the Mark?
Of course yes, this gold coin is made to fit, not too big,
not too small, very easy to carry in your pocket and when you weigh it, it
weighs 24 carats. This is also the unit of measurement for the weight of
gemstones.
Maybe many of you will wonder why at that time the unit was
not kilograms or ounces, but Karat? It can be roughly understood that at that
time the scales were not as modern and accurate as they are now. So the use of
the scale is quite complicated.
Moreover, the units of kilograms and ounces are too large,
few people have a kilogram of gold to exchange, buy and sell. So to make things
simpler, people chose the seeds of a plant that are very similar in size and
weight to be the unit of measurement and that is the seed of the carol tree.
They convention that every tree seed will weigh 1 carat.
Thus, a 1-carat diamond weighs as much as a carol seed, and a 24-carat Mark coin
weighs as much as 24 carol seeds.
But a Mark weighing 24 carats has nothing to do with the
quality of 24k gold right? So let's see, the minting of gold coins has
encountered some major obstacles, that is because pure gold is very soft, so
the minted coins are easily deformed, not hard and not durable.
So people are required to mix it with other metals to make
it harder and more durable. But mixing gold with other metals creates the
problem that gold is no longer pure. Now how to distinguish which Mark is made
of gold, which Mark is mixed with other metals, and mixed with more or less?
If it is not made clear, the people will not trust the
King's gold coins and will not accept their use. So the king had to make a rule
that he would list the proportion of gold in the Marks according to the amount
of gold in each coin.
For example, a Mark coin will always weigh 24 carats, and if
the coin has 20 carats of gold, 4 carats of copper, it will be called a 20
carat gold coin, abbreviated as 20K. Any coin made up of 10 carats of gold, 10
carats of copper and 4 carats of iron is called 10k gold.
In short, as long as you care how many carats of gold are in
each Mark, it will correspond to the name of the gold. We will have gold from
1K to 24K. At this point, you also understand that 24K gold, ie the Mark coin
is made up of 24 carats of gold, not mixed with any other metal, 100% pure.
That is the origin of the name 18K gold or 24K gold or xxK gold as well.
However, society changed, we no longer mint 24 carat coins.
We have gold bars with many different sizes, different weights, but the unit of
measurement for gold quality is still used as K.
For example, any piece of gold or a pound of gold or a ton
of gold that is recorded as 12K gold, we still understand that it is mixed gold
and gold only accounts for 50%, the remaining 50% is other metals.
You can also change K to golden age or to % content,
specifically 24K corresponds to 100%, then one K corresponds to 4.2 % or 0.42
years old.
So 10K gold is 42 % real gold, 58 % other metals and it is
4.2 years old. 18K gold, it will have a content of 18 times 4.2 which is 75%
pure gold and its age is 7.5 years old.
Many of you will ask that how much K is the four-number nine
gold equivalent to gold? it's very easy guys, that means pure gold to 99.99%,
only less than 0.01 % is impurities, such an extremely low impurity rate can be
considered as 100% pure gold , ie 10 years old gold, but 100% pure gold is
indeed 24K gold.
So the four-number nine gold is almost 24K gold, but in fact
24K gold is just a theory, in practice it is rare for any gold to be so pure,
impurities are difficult to completely remove, so achieving 99.99% is also
almost absolute. Even gold used to mix food, need to have a high level of
safety, only using 99.99% gold is guaranteed.
In short, through this video, you have understood that 24K
gold means 100% pure gold, the letter K is derived from karat, the number 24 is
the mass of the Mark coin made of gold. Gold with a higher K is purer and more
expensive. Hopefully the video has brought you more knowledge about gold, next
time you go to buy a few pounds of gold to save, you also know which type to
choose.
Thank you for watching the video. Good bye and see you
again.
Comments
Post a Comment