The ratio of the weight of a gemstone of the same volume to the weight of water is called the specific gravity. Divide the weight of the gemstone in the air by the difference between the weight of the gemstone in the air and the weight of the gemstone in the water, and the value […]
Thể loại Lưu trữ: Tin tức trang sức
Gemstone minerals often have a fixed, independent crystal form, and the crystal lattice pattern is determined by the physical properties of the mineral. Usually the crystal form of the gemstone will affect the way the gemstone is cut. The crystalline system of gemstones is divided into: Isometric, Tetragonal, Hexagonal, Trigonal, Orthorhombic, and Monoclinic. Monoclinic), Triclinic […]
Theo nghiên cứu, ngọc lục bảo được khai thác ở Ai Cập ở bờ tây Biển Đỏ hơn 4,000 nhiều năm trước. Đá quý yêu thích của Cleopatra là ngọc lục bảo. Cô ấy không chỉ đặt tên cho mỏ ngọc lục bảo bằng tên riêng của mình. Nhân danh Cleepedro, ông cũng thưởng cho các bộ trưởng những viên ngọc lục bảo tốt nhất được sản xuất ở đó. Thanks to […]
Trong số các loại đá quý màu, Ngọc lục bảo vàng là loại đá quý đắt tiền với sản lượng thấp nhưng rất được ưa chuộng. Màu sắc của chrysoberyl dao động từ vàng đến vàng lục và nâu vàng. Nó tương tự như hình dạng của viên beryl vàng. Vì chỉ số khúc xạ và độ cứng của chrysoberyl cao hơn beryl, the luster after cutting is […]
Both alexandrite and opal alexandrite belong to the golden emeralds among the colored gems, and they are treasures among gems. TRONG 1830, a color-changing gem was discovered in the Ural Mountains of Russia. This day happened to be the birthday of Emperor Kaiser Alexander II of Russia, so it was named Alexandrite after the Emperor […]
Pearls symbolize purity, tenderness, love and peace. It is said that pearls are the favorite of the goddess of the moon. In Western astrology, pearls are also the guardian stone representing the moon. In the history of ancient civilizations, pearls have a very lofty status and are one of the few gems that were regarded […]
Pearl appeared in human history quite early. People in ancient times believed that it had a powerful power, so it was given many mysterious legends and occupied a large area in jewelry. Ancient priests often put a pearl on their foreheads to enhance their spiritual power. These priests are usually the most powerful figures in […]
Pearl is the most valuable and most important kind of organic gemstones. It is formed by enveloping the pearl core with the pearl secreted by shellfish, so unlike other gemstones, which have crystal form and chemical composition, the main chemical composition of pearl is 90%. The above is calcium carbonate, the rest is water and […]
Although cultured pearls are artificially implanted into the nucleus, the results depend on biological phenomena. Even if the implanted nuclei are all round, they often appear in many different shapes under the nacre secreted by shellfish. It can be classified into the following types: tròn, off-round, pear-shape, circular shape, and baroque. Nói chung, the round […]
All pearls produced in the South Pacific are called South Sea Pearls. In terms of appearance, South Sea Pearls are generally larger in size, Về 9 ĐẾN 20 cm in diameter, and their luster and skin brightness are better than the other two pearls. South Sea pearls can be divided into white South Sea beads, […]