In some jewelry advertisements and magazines, we often see a picture that is obviously a purple gem, but it is also called sapphire. Some people may say, isn't this bullying me that I am color blind? But it is actually because of the practice of naming gems in the jewelry industry. All gems are divided into two kinds, sapphire and ruby. Ruby is red, so all gems except red are called sapphires. Whether sapphire or ruby, these are just names to distinguish these gems.

Many of us think that the color of a gem is its name. For example, ruby is red, and then emerald is definitely green. Actually, sapphire is not like this. Sapphire is blue, but there are other colors, such as pink, purple and gray. Although these are not blue, they are all called sapphires.

In a lot of news, we will see that many people think they know how to identify gems, so they will spend a lot of money to buy them, but in fact, they finally find themselves cheated and bought fakes. So how can we choose a good gem? The first is the color of the gem. Obviously, if a gem is of very good quality, its color will be very saturated and bright, and it will not be as dull as those cheap gems.

Then there is the purity of gems, many of which contain impurities. Some exaggerated to the naked eye can see impurities. A slightly better quality gem needs professional props and instruments to see the subtle impurities inside. But the purity of sapphire is very high, and there are almost no impurities.