Detailed explanation of diamond fire color and eight hearts and eight arrows diamond fire color is divided into two parts: diamond fire color and color.
Fire-is the brightness of the diamond, which is the amount of light reflected by the diamond.
Color-it is the sparkle of the diamond, and it is the quality of the light reflected by the diamond.
Fire color is an important factor to determine whether a diamond is beautiful or not, so cutting determines fire color. People's love for diamonds is not only hard and eternal, but also beautiful.
The fire of diamonds
The fire of diamond is determined by the cutting of diamond (the next article will introduce it in detail)
The color of diamonds
Legend 1:
Let's look at a physics experiment in high school (pictured above). In the experiment, we put a beam of white light into a prism, and the white light is dispersed into seven colors: red, orange, yellow, green, blue and purple. This is called optical dispersion, which is why we see rainbow colors on diamonds.
Next, let's look at this decentralized model:
When light enters a diamond from a certain angle, it will refract and disperse at the same time. When he shoots diamonds, we can clearly see the color of the rainbow.
When we change the angle of light:
When the light is perpendicular to the surface, there is no dispersion, because there is no refraction when the light enters, so there is no dispersion. Turn the angle of the diamond again and find that the bigger the angle, the more severe the refraction.
Diamond diffusion model:
When the light enters the diamond at a vertical angle, the first total reflection and the second total reflection occur (the refractive index of the diamond is 2.4 17), and the third refraction occurs, thus producing a small rainbow.
When light enters from the top of the diamond:
The light refracted for the first time, and the dispersion was amplified by the second total reflection and the third total reflection, so a big rainbow was seen. Therefore, when light enters from the top of the diamond, it will produce more colors. In other words, if you want more colors, you must enlarge the crown of the diamond and reduce the table of the diamond. However, if the mesa area decreases, although the color reflection of diamond increases, the amount of reflected light will decrease and the fire will also decrease, which is the contradiction between diamond fire and color.
Therefore, diamond designers can only change the fine structure of each facet in various ways to change the characteristics of diamond color, that is, to change the quality of diamond light. Eight hearts and eight arrows are typical representatives of diamonds;
1977, the Japanese and Okuda entrusted Ken to invent an instrument that can check the cutting of diamonds to detect the processed diamonds. This instrument is now a cutting mirror. Because you can clearly see eight hearts and eight arrows under the cutting mirror, I accidentally found eight hearts and eight arrows diamonds when I was willing to go.
1985, the Japanese made the first diamond with eight hearts and eight arrows for Ozawa Tamura in Tokyo, so the world set off an upsurge of research and development with eight hearts and eight arrows. So what exactly is eight hearts and eight arrows?
Eight hearts and eight arrows is an optical phenomenon of round drilling and bright cutting. When the shape of the diamond is polished to a certain proportion (as shown below), eight arrows can be seen in the crown of the diamond, and eight hearts can be seen under the pavilion of the diamond, so it is called eight hearts and eight arrows.
First of all, eight hearts and eight arrows are not an extremely rare phenomenon. Most of the diamonds in the GIA diamond grade are cut and the symmetry reaches EX, and the phenomenon of eight hearts and eight arrows can be seen more or less.
Secondly: diamonds that are not eight hearts and eight arrows are the best. It should be said that diamonds with cutting and symmetry reaching EX are the top.
There are many grades of diamonds with eight hearts and eight arrows, including imperfect eight hearts and eight arrows, perfect eight hearts and eight arrows, and various shapes and styles of eight hearts and eight arrows, as follows:
Therefore, it is not easy to say that one's own diamonds are eight hearts and eight arrows, and others' are not. Therefore, eight hearts and eight arrows diamond certification came into being. For example, the certificate of eight hearts and eight arrows diamond certified by IGI is specially designed for certification.
However, not everyone agrees that eight hearts and eight arrows are the standard of diamond grade. Eight hearts and eight arrows diamonds are suitable for people who pursue perfection and like the phenomenon of eight hearts and eight arrows.
Eight hearts and eight arrows are a reflection of the quality of diamond light. After years of research by diamond designers all over the world, there are actually many other methods. Now let's compare some other styles under the lens (pictured):
These three diamonds are top cut diamonds, and all three diamonds can see the obvious phenomenon of eight hearts and eight arrows. At the same time, 8 1 faceted diamonds and 9 1 faceted diamonds show different optical properties from ordinary 57-faceted diamonds.
Look at the sparkling diamonds with a direct light source (pictured):
Diamonds are the most beautiful under point light, which is why diamonds are the most beautiful in the counter, and why diamonds are more beautiful at night than during the day. The sparkle of these three diamonds can be clearly seen in the figure. The 9 1 facet is the brightest, the 8 1 facet is bright, and the 57-facet diamond is slightly inferior.
Look at the color of the diamond with a strong light source on the side (as shown):
You can still see their distinctive features.
Finally, let's look at a diamond with ten hearts and ten arrows, and compare it with eight hearts and eight arrows (as shown in the figure):
It has 129 faces. Against the background of traditional 57-sided diamonds, diamonds with ten hearts and ten arrows can be said to be very brilliant.
In this article, the quality of diamond light is explained in detail. These are exquisite diamonds that pursue a higher level, so that you have more choices when buying diamonds.