Excuse me, sapphire doesn t look very blue and a little black, I don t know if the quality is good??

It should be a very pure color and no impurities.

The reason why sapphires are not recommended to buy is that it is difficult for ordinary people to distinguish the real from the fake.

Sapphire majors are certainly available for professionals. However, it is difficult for ordinary people to distinguish between authenticity and fakeness, and it is easy to buy fakes. If it refers to the sapphire from Thailand, the quality is not as good as the Sri Lankan sapphire, and it is sure that it is a genuine product that has not been injected with glue and has not changed color, and the price can also be bought at a cheap price.

In recent years, due to the decreasing amount of sapphire deposits, the mining difficulty has become more and more difficult, so there are many rough sapphires.

Coupled with the increase in labor costs such as sorting, cutting and polishing, as well as the influence of factors such as the more things are suspicious, the more jewelry lovers are popular, and the ** of sapphire can be said to be rising all the way. According to statistical analysis, in the past 10 years, the annual growth rate of sapphire value is as high as 30 40. According to experts, the value retention of sapphire is clear, and it has a very high investment and collection value.

And it is expected that in the next 5 or even 10 years, the demand for high-quality precious stones, including sapphires, will increase tenfold in the jewelry market at home and abroad. As the market demand increases year by year, the market for rough sapphire alone** is expected to continue to rise in the next few years. However, when it comes to the value retention of sapphires, in fact, the number of carats alone is not enough to measure, the main thing is the quality of sapphires, but among the same high-quality sapphires, the larger the carats, the better the value retention.

Origin of sapphire:

There are not many sapphire sources in the world, mainly Myanmar, Sri Lanka, Thailand, Australia, China, etc., but in terms of gemstone quality, Myanmar and Sri Lanka have the best quality. According to the origin of Zheng Jing, it can be divided into two categories: one is sapphires from Myanmar, Sri Lanka and Kashmir, India.

The other category is sapphires from Australia, Thailand and China.

Sapphires from Myanmar and other properties are bright blue because they are colored by titanium, with silk rutile and fingerprint-like liquid inclusions. Silk rutile wrapped in hand can produce six or twelve rays of starlight, is a high-quality gemstone variety. Sapphires from Australia, Thailand and China are colored by iron because they contain more iron, so the color of the gemstones is very dark, and the reflective effect of faceted gemstones is not very good.

Here are some common ways to identify real and fake sapphires:

1 Water Identification Method A drop of water is dropped on the sapphire, if it becomes a dewdrop, it will not disperse for a long time is real jade.

2 Hand touch If it is a real sapphire, it will feel cold and lubricated when touched by hand.

3 Observation method The sapphire is observed in the bright place, and the color is clear and evenly distributed.

4 Tip of the tongue identification method The tip of the tongue licks the real sapphire with an astringent feeling, while the fake one does not.

In addition, you can also use a magnifying glass to observe, mainly to see if there are cracks, and if there are cracks, their value is greatly reduced.

Sapphire is a corundum mineral in nature that is second only to diamond in hardness, and has reached the level of gem quality, sapphire itself has crystal transparency and vivid color. Ruby and sapphire are collectively referred to as corundum gemstones, and the international gem community will call red corundum gemstones rubies, and all the other color gemstones are collectively called sapphires, so it is not only blue gemstones called sapphires, sapphires also have yellow, purple, orange and so on hues.

Of course, each color of sapphire has a different rarity and therefore a different value, so it is important to understand the value of each color sapphire.

Everything except ruby is called sapphire.

Sapphire is a mineral of the corundum family, and all colors of corundum except red corundum are collectively called sapphires, so sapphires are very rich in color. Different colors of sapphires are due to different chromogenic elements, for example, blue sapphires are due to the combination of iron and titanium, and yellow sapphires are very complex due to the color-causing factors, which may be iron-causing or color-centric.

In addition to ruby, other gem-quality corundum that exhibits various colors due to its different chemical composition is collectively known as sapphire. With the exception of blue sapphires, where the word "blue" can be omitted, the naming convention for other sapphires is that they are preceded by the color they appear.

So sapphires don't have to be blue.

What comes to mind when you think of sapphires? Blue gemstones? But in fact, some sapphires are not blue, so let's talk about why.

01 The mineral name of red sapphire is corundum, chemical formula AL2O3,. It has a hardness of 9 on the Mohs scale, second only to diamond. Corundum that reaches gem quality, if it is chromogenic by CR ions, it is red, which is ruby; Therefore, in the name it is said "xx color sapphire"...

Although it is a bit awkward to say, it is still necessary to say so.

02 From a mineralogical point of view, sapphire and ruby are both corundum and Al2O3. In other words, corundum, a mineral, is enough to become a sapphire or ruby when it reaches gem quality. When it contains a certain amount of chromium (CR) (2-3%, up to 4), it exhibits a sufficient concentration of red color, which is called ruby.

In addition to ruby, other gem-quality corundum that exhibits a variety of colors due to its different chemical composition is collectively known as sapphire (with the exception of Padma corundum, which is the only type of corundum that has its own name). For example, when a gemstone does not contain enough chromium and only appears pink, it cannot be called a ruby, but a pink sapphire.

03 According to the study of mineralogy and gemology:

Contains iron (Fe), titanium (Ti) blue.

Contains chromium (CR, when the quantity is less than 2 3) pink.

Contains chromium (CR), iron (Fe) orange.

Contains chromium (Cr), titanium (Ti), iron (Fe) purple.

Green with vanadium (V), cobalt (Co), nickel (Ni) or iron (Fe++).

Contains iron (Fe), nickel (Ni) yellow.

Contains iron (Fe+++, manganese (Mn) brown.

Very pure, almost free of impurities, colorless and transparent.

04 Except for the blue sapphire, which can omit the word "blue", the naming rule of other sapphires is: they are crowned with the color before the sapphire, such as: pink sapphire, yellow sapphire, colorless transparent sapphire and so on.

So, a ruby must be (of sufficient concentration) red, while a sapphire is not necessarily blue.