A problem with gold, platinum and platinum?

**It is the softest gold, and it is also the gold that appreciates the fastest and is the most valuable, **There are thousands of pure gold (some people call it 24k gold) and pure gold. Theoretically, 100% gold can be called 100% gold (24k gold), but it is impossible to have 100% **. Therefore, the gold content is greater than that of pure gold, the gold content is greater than that of 24k gold, and the gold content is greater than that of pure gold.

In fact, platinum is white gold, but not all white gold is mostly platinum.

"pt" is also the chemical symbol for platinum, which is the abbreviation of "platium" in English, so platinum is usually on it"pt990""pt950""pt900""pt850"The meaning of the expression is that the platinum content is not less than"pt"The higher the number, the higher the purity. However, the most common ones on the market should be"pt950"。In addition, the hardness of platinum is better than **, so as a piece of jewelry, the production style of platinum is better than **.

But personally, I feel that the collection value is far less than **)

White karat gold is also known as white gold. White karat gold generally refers to alloys. **Synthetic with a certain metal, not of high purity. The most common is 18k gold. (18k gold comes in a variety of colors).

**Don't explain too much, right? That is, gold, the chemical element symbol au, is a soft, golden-yellow, corrosion-resistant ***. Gold is one of the rarest and most precious metals in metals.

Platinum (white gold) jewelry basics.

Platinum (PT) is a natural white color***. Only platinum can be called white gold, and not all white metals are platinum. Platinum is typically 95% pure (only 75% for 18k gold).

Only platinum can be called "white gold", but not all white metals are platinum. The symbol of the chemical element is pt, which is silvery-white***, the hardness ratio is slightly higher, and the density is. c), melting point, it has many excellent characteristics, such as corrosion resistance, oxidation resistance, and beautiful color, etc., because platinum has these characteristics, not only to be made into exquisite shape, tough white gold jewelry, but also can be used to make jewelry inlaid with jewelry, especially on the white gold base inlaid with sparkling diamonds, perfect combination, complement each other, is the most popular jewelry at present.

18k - the content is, there are many colors of k gold, usually yellow, red, white. Among them, white K gold is actually an alloy of nickel, zinc, copper and other elements. It is not what is commonly referred to as white gold jewelry. White gold refers to *** platinum (pt).

24k - the current market occasionally marked with 24k ** jewelry, according to the national standard, the theoretical value of 24k gold content should be 100%, gold without barefoot, so strictly speaking, 24k is not existing, the sale of 24k gold is incorrect, does not meet the national standard.

Personally, I think ** is the most valuable.

Two different precious metals, white gold is actually another name for platinum, but the market generally calls 18k white gold. A lot of people are being fooled. 18k generally means that it contains 75% **24k is pure**.

Different metals, the elements are not connected, and the 18k and 24k behind you refer to the content, which is an internationally accepted unit.

1.Platinum is a natural pure white metal, K white gold is an alloy with palladium, nickel, silver and zinc and other metals, so it is also known as K white.

2.Platinum is rare, and the annual output is much less than **, which is more precious.

3.Platinum has a high density, and a piece of platinum jewelry is 20% heavier than a piece of karat platinum similar jewelry.

4.Platinum is resistant to strong acid, alkali corrosion, oxidation, and chemically stable than K platinum.

5.Platinum jewellery is marked with the "PT" mark and its fineness. For example, "pt900" refers to the platinum products of the jewelry, and the platinum content is 90%. The mark of K platinum, such as "18KWG", is based on the ** composition it contains.

White gold refers to platinum, so there is no difference between white gold and platinum.

There are 3 differences between platinum (white gold) and **

1. The chemical symbols of the two are different:

1. The chemical symbol of platinum (platinum): pt.

2. The chemical symbol of **: au.

Second, the color of the two is different:

1. The color of platinum (white gold): white.

2. Color: yellow, golden yellow, bright yellow.

3. The physical properties of the two are different:

1. Physical properties of platinum (white gold): pure platinum is a silvery-white metal with luster and malleability. It is the highest malleability of all pure metals, outperforming gold, silver, and copper, but its malleability is lower than gold.

Platinum metal is extremely corrosion-resistant, very stable at high temperatures, and has very stable electrical properties.

It does not oxidize at any temperature, but can be attacked by various halogens, cyanide, sulfur and caustic. Platinum is insoluble in hydrochloric acid and nitric acid, but it dissolves in hot aqua regia to form chloroplatinic acid.

2. Physical properties: Ductility is unusually strong, 1 ounce of gold can be drawn into 50 miles long, and its ductility makes it easy to cast, which is a good choice for making jewelry. Gold is the most tensile of all metals.

It has high malleability and can create extremely thin gold sheets that are easy to roll. 1 ounce of gold can be hammered as thin as 1 millionth thick and 100 square meters large. In ancient times, it was hammered into thin sheets to decorate temples and palaces.

These can show the extremely strong flexibility and malleability.