The jade of the He family--HeShiBi

Chinese Academy of Sciences, Guangzhou Institute of Geochemistry, Dr. Wang Chunyun’s report Crack The Mystery of The Soul of The Country, HeShiBi, untied many mysteries of the HeShiBi. After wang Chunyun years of research, HeShiBi and ChuanGuo YuXi is two independent national treasure. Wang Chunyun said, from the material point of view, the HeShiBi is "gem", the highest value of all jade and gem with the most outstanding quality. It is slightly larger than an egg that one adult hand can hold, so that the need to use both hands to dedicate. And its weight is more than 800 karats, the ideal diameter of the ball and slightly larger than 4.4 cm, about the equivalent of the Warring States period 1.90 inch, the corresponding Valuation of the Warring States period is about forty thousand gold, that is why it also be called "Forty Thousand Gold Bead", which is colorless, transparent, slightly flawed, bead super diamond. This shows that China's understanding of the diamond began at least from the Warring States period.

British Queen’s scepter and crown

"Cullinan", its discovery is quite accidental. January 25, 1905, South Africa, a manager named Wales, occasionally saw half of the mine ground exposed a glittering thing, he dug it with a knife and found a huge gem diamond. Its weight is converted to the nowadays’ common metric carat for 3106 carats, or 621.2 grams. The volume is about 5x6.5xl0cm, equivalent to an adult man's fist. It is pure and transparent, with light blue tones, the best grade gem diamond. Until now, it is the world's largest gemstone diamond.

At the beginning of 1908, Cullinan was sent to Amsterdam, the most authoritative city of polishing diamond at the time, and handed it to Joa Aschar for processing, with a fee of £ 80,000. As the original stone it is too large, you need to make a plan in advance to break into several small pieces. Breaking it is an extremely difficult job, if the study is not enough or with poor technology, this huge gem will be broken into a pile of little value of debris.

Cullinan was split by three skilled craftsmen, working 14 hours a day and pondering for eight months, with the result of 9 large diamonds and 96 small diamonds. The total weight of the 105 diamonds was 1063.65 carats, which was 34.25% of the original weight of the Cullinan. It can be seen that the diamond in the processing of diamonds, the weight loss is great. The largest one of the nine named "African Star I" that is "Cullinan No. 1", weight 530.2 karats, of the drop-shaped, pondering 74 faces. It is also the world's largest diamond, set in the British king's scepter. The next one is called "African Star II", weight 317.4 carats, with the appearance of square and 64 faces. It is the world's second largest diamond, is now set in the middle of the Queen of British Empire’s crown.

Titanic - The Heart of the Ocean

Hit the world's ultra-high box office record, the "Titanic", the large heart-shaped blue diamond "Ocean Heart" in that movie. It is not only at that time high society rich life portrayal, but also Rose and Jack’s unforgettable love memories. It is said to imitate the famous blue diamond "The Hope Diamond" in the history. The existing diamond "Hope", weight 45.52 karats, with extremely rare dark blue, is one of the world's top ten diamonds.

The world's only one engraved large diamond - Shah

Diamonds are the hardest material, inscription on the above of staggering degree. The gem craftsman grinds some fine powder from the diamonds and dipped the powder into the diamond with a pointed stick. 3 times after the lettering, "Shah" from the discovery of the weight of 95 carats turn to 88.7 karats. In 1829, the Russian ambassador to Persia was stabbed to death, the tsar threatened to retaliate. In order to quell the anger of the tsar, the Prince of Persia Hoslev Mikra rate delegation to St. Petersburg to apologize. Prince gave the tsar a treasure, the vicissitudes of the "Shah". Since then, "Shah" has been preserved in Russia.

Tiffany’s legend yellow diamond

In the movie Tiffany's Breakfast, Audrey Hepburn wearing a little black dress and with "Tiffany Ribbon Rosette" Tiffany yellow diamond necklace, this elegant image win support among many people. "Ribbon Rosette", made of platinum and diamond, is surrounded by the huge yellow diamonds and around Hepburn's neck. Tiffany yellow diamond known as one of the world's largest, most beautiful yellow diamond, mined in 1877 South Africa . Tiffany cut the diamond stone into 82 faces, weighing 128.54 karats.

With the improvement of CVD synthesis technology, through the adoption of gas raw material (hydrogen, methane), Luoyang Yuxin Diamond Co., Ltd get the completely transparent and colorless large size diamond single crystal under less than one air pressure, the temperature of 800-1200 ℃ by epitaxial growth way (growth way/as shown in Figure 1), its composition, hardness, density, etc. are basically identical with natural diamond, but the price is much lower than that of natural diamond; different from the method of high temperature and high pressure (HTHP), CVD artificial synthetic technique does not need to use the catalyst, and puts an end to forming metal inclusions, cracks, holes, etc. in the production.

Features: after polishing, the clarity is commonly VVS and above level, color chromaticity of D-J.

We can provide raw diamond at carat level.