Precious metal

Some metals are very special.

They are rare to find in nature. These metals shine very bright. They do not rust easily.

People use them for pretty jewelry. They also make coins from them.

Some metals are kept in big bars. These are called bullion. People buy them to save money.

They can also be made into small coins.

Gold and silver are very famous. They are used in art. They are also used for money.

Other metals like platinum are used for work. They help in many machines.

It is fun to learn about shiny metals!

Precious metals are special elements found in nature.

They are rare and have high value. These metals do not rust easily. They are also very shiny.

Many people use them for jewelry and art. Gold and silver are the most famous.

Some people buy metals in large amounts. This is called bullion.

Bullion can be made into bars or coins. People value bullion by its weight and purity. Purity means how clean the metal is. Most bullion is 99.9% pure. It is very hard to make metal 100% pure.

These metals are also used in science and industry. Platinum and palladium help in machines. They are used in catalytic converters. These parts help reduce pollution from cars. Gold is also used in tiny parts called nanoparticles. These can help make solar cells. Even aluminum was once a precious metal. It was very hard to take out of rocks. Now, it is much cheaper to make.

Precious metals are rare elements found in nature.

They have a very high economic value. These metals are often called noble metals. This is because they do not rust easily. They are also less reactive than most other elements. Many of them are shiny and can be stretched into thin shapes.

People use them for jewelry, art, and making coins. Gold and silver are the most famous examples. Other precious metals include the platinum group metals. These are ruthenium, rhodium, palladium, osmium, iridium, and platinum.

People often buy these metals in large amounts called bullion.

Bullion is valued by its weight and its purity. Purity tells us how much of the metal is actually there. Most mass-produced bullion is 99.9% pure. It is very hard to reach 100% purity. The Canadian Gold Maple Leaf series is very pure. It can reach 99.999% purity. Some countries also make special bullion coins. These coins are legal money, but they are worth much more as metal.

For example, a Canadian Gold Maple Leaf has a face value of $50. However, it contains one troy ounce of gold.

History shows how the value of metals can change.

In the past, many metals were used as currency. Aluminum is a very interesting story. Today, aluminum is a common metal. But in the late 1800s, it was considered precious. It was very hard to take out of rocks. This made it more expensive than gold. Napoleon III even gave aluminum cutlery to his most important guests. In 1884, the top of the Washington Monument used 100 ounces of pure aluminum. Later, new ways to make aluminum caused the price to drop.

Many nations mint huge and amazing coins.

The Australian Gold Nugget coin is one of the largest. It contains one full kilogram of gold. In 2012, the Perth Mint made a 1-tonne gold coin. That coin had a gold value of about $50 million AUD. Austria also made a very large coin in 2004. The Vienna Philharmonic Coin contains 31 kg of gold. In 2007, the Royal Canadian Mint made a 100 kg gold coin. This was done to show how pure their metal could be.

Precious metals do much more than just sit in a vault.

They help our modern world work. Platinum and palladium are used in catalytic converters. These parts help reduce pollution from cars. Gold is used in nanotechnology and solar cells. Scientists even use tiny gold and silver particles in biosensors. Investors also use these metals to protect their money. They often look at the gold-to-silver ratio to see their value. This ratio compares how much silver buys one ounce of gold. It is one of the oldest ways to track prices.

Precious metals are rare, naturally occurring metallic elements with high economic value.

Many of these elements are categorized as noble metals. This classification means they are more corrosion resistant than most other elements. They are also less chemically reactive. Most precious metals possess a high lustre and are quite ductile. Ductility allows these metals to be stretched or hammered into different shapes. While they were once vital as currency, they are now used mainly as industrial raw materials and investments.

When these metals are held in bulk form, they are called bullion. Bullion is not valued by a face value like paper money. Instead, it is valued by its mass and its level of purity. To reach high levels of purity, metals must undergo refining processes. Achieving 100% purity is nearly impossible because it becomes harder to remove every tiny impurity. Most mass-produced bullion reaches a "three nines" purity, or 99.9%. The Canadian Gold Maple Leaf series is even purer, reaching up to 99.999%.

Many nations mint bullion coins that serve two different purposes. These coins are often issued as legal tender, meaning they have a nominal face value. However, the actual value of the metal inside is usually much higher. For example, a Canadian Gold Maple Leaf has a face value of $50. As of January 2022, it contained one troy ounce of gold, which is 31.1035 grams. Some coins, like the British Sovereign, do not show their purity on the face. Yet, they are recognized for having a consistent composition.

History shows that the status of a precious metal can change over time. A metal is deemed precious if it is rare. If new ore sources are found, the value might drop. If mining or refining processes improve, the value might also diminish. Aluminum is a famous example of this change. In the late 1800s, aluminum was considered a precious metal. It was very difficult to extract from non-metallic ores. At that time, pure aluminum was more valuable than gold.

Napoleon III even gave aluminum cutlery to his most important guests.

By the late 1800s, the cost of aluminum began to fall rapidly. The invention of the Hall–Héroult process in 1886 helped cause this drop. Commercial electric generation in 1882 also played a role. Eventually, aluminum became a common metal rather than a precious one. In contrast, other metals like gold and silver have maintained their status. Investors often use the gold-to-silver ratio to assess relative value. This ratio measures how many ounces of silver are needed to buy one ounce of gold.

Some countries produce massive coins that demonstrate incredible wealth. The Australian Gold Nugget coin contains one full kilogram of 99.9% pure gold. In 2012, the Perth Mint created a 1-tonne gold coin. This coin had a gold value of approximately $50 million AUD. Austria also minted a large coin in 2004. The Vienna Philharmonic Coin contains 31 kg of gold and has a face value of 100,000 euro. In 2007, the Royal Canadian Mint made a 100 kg gold coin. This was a stunt to publicize their 99.999% purity levels.

Beyond jewelry, precious metals are essential for modern technology. Platinum group metals, or PGMs, include ruthenium, rhodium, palladium, osmium, iridium, and platinum. Platinum and palladium are key catalysts in catalytic converters. These devices help reduce emissions from vehicles. Platinum group metals have also been used to produce nitric and sulfuric acid for centuries. Gold is used in nanotechnology and oxidation reactions because of its stability.

Scientists also use gold and silver nanoparticles in solar cells and biosensors. These applications show how precious metals support sustainable technology.