Item no: 18ct diamond classic claw tennis bracelet
Collection: forever
Features: Bronx 18ct
Diamond description:
Square diamond: 69 natural round diamonds per second, 3.0 1 luxurious color, luxurious clarity and good transparency. Classification: Gem quality
This is an English translation. It should help you! Hehe, this diamond bracelet is still very expensive.
Ruby and sapphire jewelry were very popular in China in the 1990s. However, in the following years, with the classic slogan of "Diamonds last forever, one will last forever", De Beers, a powerful diamond promotion agency, deeply rooted in the people's hearts the meaning of "eternity" symbolized by diamonds, and the jewelry market was swept by a strong "white wave". The sales of diamond ornaments account for more than 90% of the total sales in the jewelry market, while the proportion of ruby and sapphire ornaments is less than 1%. In recent years, with the improvement of people's consumption level and the enhancement of aesthetic ability, especially young consumers no longer blindly follow the trend when choosing jewelry, but emphasize the choice of personality. The colored gems market gradually began to recover, and grew rapidly at a rate of over 65,438+00% per year. Therefore, the sales of colored gems jewelry, mainly rubies and sapphires, are about to usher in a new spring.
It is of great significance to understand the quality evaluation factors of rubies and sapphires, whether it is to guide jewelers' marketing strategies or as a reference for consumers to buy. The quality evaluation system of rubies and sapphires is basically consistent with the "4C" evaluation system of diamonds, but compared with diamonds, the quality evaluation of rubies and sapphires is more complicated and subjective, and there is still no unified international standard. The colored gems classification method and system proposed by GIA are the most commonly used in North America, and are mainly designed for natural, transparent and unoptimized faceted gems. For the grading evaluation of rubies and sapphires, the typical grading evaluation systems are AIGS in Thailand and Suwa in Sakazaki. No matter what classification system is adopted, when evaluating the quality of rubies and sapphires, there are mainly the following aspects: color, clarity, cut and weight.
Color (color)
Color is the most important factor affecting colored gems's evaluation. When evaluating the quality of rubies and sapphires, we should first judge the color and tone of the gems. The color of natural gemstones should be composed of main color and auxiliary color. For example, the color of ruby is mainly red, accompanied by relatively weak pink, orange or purple tones; The color of sapphire is mainly blue, and it is often accompanied by green or yellow tones. Generally speaking, the greater the proportion of the main colors of red and sapphire, the closer the color is to the spectral color, and the higher the color quality, while the greater the proportion of the auxiliary colors, the impure the color and the lower the color quality. So pure red is the best color of ruby, and pure blue without green tone is the best color of sapphire.
The saturation and brightness of ruby and sapphire are also important factors affecting color evaluation. Saturation refers to the brightness or purity of a color. The saturation of each monochromatic light in the visible spectrum is the highest, that is to say, the closer the color of a gem is to monochromatic light, the higher its saturation, and the brighter its color will be. Brightness refers to the perception of color brightness by human eyes. The brightness of a gemstone color is related to its hue and its ability to reflect or transmit light. Generally, rubies and sapphires with high color quality should have high saturation and moderate brightness.
Different color saturation and brightness of four kinds of sapphire. Gem 1 has low color saturation but high brightness; Gem 2 has good color saturation and brightness; The color saturation of Gem 3 is higher than that of Gem 2 in some parts, but the overall tone and brightness are deeper, which reduces the luster of Gem 3. The color saturation and brightness of gemstone 4 are very low, and the gemstone looks dull.