PT950 indicates that this diamond ring is made of platinum with a platinum content of 95%; Ctf is the English symbol of Chow Tai Fook, abbreviated as Chow Tai Fook; D0.80CT means diamond ring is 0.8 carat, which is 80 cents. If it's a round diamond, the price is probably above 40 thousand.

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The "four C" principles of diamond selection: cut, color, clarity and carat weight. This is the key to identify the quality and value of diamonds.

1, diamond ring cutting. Cutting is the only human factor. A skilled diamond cutter can make a good diamond shine, and he can make the internal light reflect to the surface of the diamond to the maximum extent. The cutter should cut symmetrically like looking in the mirror.

The ideal diamond should be round, with 58 clear cut edges, which can reflect light to the greatest extent. A high-quality diamond has high value, strong reflection and symmetry, but an inferior diamond may be cut too deep or too shallow to shine.

2, diamond ring color. In some big jewelry stores, some diamonds are displayed for comparison. They arrange diamonds of various color grades in a row to help customers compare, because ordinary customers can't tell the color of diamonds with the naked eye. The color of diamonds is colorless as the top grade, and gradually comes second with the deepening of yellow.

3, diamond ring purity. Generally speaking, defects determine the value of diamonds. More precisely, it depends on the impurity content in the drilled ore. Almost every diamond contains impurities, even the best quality diamond will have some defects. When its cleanliness is LC level, it can be regarded as flawless level.

4, diamond ring carat. Carat was once considered as the decisive criterion to measure the value of diamonds. In fact, the cut, color, purity and weight of a diamond are equally important to its value. The value of a 2-carat diamond with poor cutting technique, yellow color and defects is much lower than that of a perfectly cut, transparent and pure diamond.

So the weight of a diamond is not the main factor that determines its value. The weight of a diamond still affects its value. It is important to find out whether the weight of diamonds told by jewelers is accurate. Therefore, when you buy a diamond, ask your jeweler to measure the weight of the diamond on the spot. If the jeweler doesn't want to do this, go to another store.

Baidu encyclopedia-diamond ring