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 [...]
Категория архива: Ювелирные новости
Минералы драгоценных камней часто имеют фиксированную, независимая кристаллическая форма, а структура кристаллической решетки определяется физическими свойствами минерала. Обычно кристаллическая форма драгоценного камня влияет на способ его огранки.. Кристаллическая система драгоценных камней делится на: Изометрический, четырехугольный, Шестиугольный, Треугольный, орторомбический, и Моноклиника. Моноклиника), Триклиника [...]
Согласно исследованию, Изумруды добывали в Египте на Западном берегу Красного моря больше, чем 4,000 много лет назад. Любимый драгоценный камень Клеопатры - Изумруды. Она не только назвала изумрудную шахту от своего имени. Во имя Клепедро, Он также вознаградил министров прекрасными изумрудами, произведенными там. Thanks to [...]
Among the colored gemstones, golden emeralds are expensive gems with low output but very popular. The color of chrysoberyl ranges from yellow to yellow-green and yellowish brown. It is similar to the shape of golden beryl. Since the refractive index and hardness of chrysoberyl are higher than that of 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. В 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 [...]
Хотя культивированный жемчуг искусственно имплантируют в ядро, результаты зависят от биологических явлений. Даже если имплантированные ядра круглые, они часто появляются в самых разных формах под перламутром, выделяемым моллюсками.. Его можно разделить на следующие виды: круглый, вне раунда, грушевидная форма, круглая форма, и барокко. Вообще говоря, раунд [...]
All pearls produced in the South Pacific are called South Sea Pearls. In terms of appearance, South Sea Pearls are generally larger in size, о 9 Кому 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, [...]