Съдейки по процеса на откриване на изумрудите в света, Не е трудно да се види, че основният произход на изумрудите е Колумбия в Южна Америка, и много легендарни изумрудени съкровища също произхождат от Колумбия. 1. Девън Изумрудс Девеншир Изумруд (Devenshire Emerald), Открит в района на минното дело на Музуо в Колумбия през 19 век, [...]
Архиви на категория: Новини за бижута
Гинес Изумруд Кристал, с тегло 1759ct, се произвежда в района на минното дело в Колумбия в Колумбия. Това е и един от най-големите висококачествени изумрудени кристали, открити в света. It has created the world's largest high-quality gem-level emerald Green Guinness World Records. Дължината на кристала е 2-2.5 пъти диаметърът, Цветът е ярък [...]
Опал също е скъпоценен камък с дълга история и се нарича Precious Opal в минералогията. От 200-100 BC, Хората започнаха да използват опали като скъпоценни камъни. В древен Рим, Опалите бяха не само добре познати, но и изключително ценни. Плиний, Древният римски натуралист, Веднъж даде много прекрасно описание на Opal: "Опал има подобен на рубин [...]
In the entire diamond family, true black diamonds are also very rare. Diamonds with a large amount of black inclusions are generally considered low-quality diamonds and can only be used for industrial purposes. De Griscono Spirit Diamond is a rare gem-level black diamond in the world, and it is also the largest cut black diamond [...]
Amsterdam Diamond (Amsterdam Diamond), produced in South Africa, is also a famous black diamond. The rough diamond weighs 55.85ct, is dark black and opaque, so it is also the same under strong light, but this diamond has a very strong luster. The diamond was cut and polished by Amsterdam Drucker & Sons. From October 1972 [...]
(3) Cullinan No. 3: It is pear-shaped and weighs 94.40ct. It was inlaid on the top of Queen Mary's crown. (4) Cullinan IV: It is in the shape of a long-angled ladder and weighs 63.70ct. It was inlaid on the circular edge of Queen Mary's crown. The Cullinan No. 3 diamond is now set as [...]
The naked eye identification of rough diamonds should start from the following aspects. (1) Observe the gloss Since diamonds have a typical diamond luster, which is an important feature that distinguishes other colorless and transparent minerals (or materials), diamonds can be distinguished from other imitations by using their luster characteristics. When observing the gloss of [...]
The unique properties of diamond make it leave some cutting characteristics during processing, these characteristics are not possessed by diamond imitations, so it is possible to identify diamonds and imitations. 1. Facets, edges and corners The high hardness of the diamond determines that the diamond has a flat surface, straight edges, and sharp corners, докато [...]
В 1970, Tel Aviv was already one of the world's major diamond cutting centers. От първоначалния си фокус върху шлифоването на малки диаманти, През 80-те години на миналия век Израел се превърна в основен резач на големи и луксозни диаманти. The diamond processing factory in Israel is known as the model of the highest level of diamond technology [...]
Antwerp has dominated the gem trading in Europe since the Middle Ages. През 15 век, it has become the center of diamond cutting and trading. In the 20th century, it became the center of cutting and grinding large diamonds. Днес, it has undoubtedly become the world's most rough and cut diamonds. Trading hub for [...]