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 […]
Kategorie -argiewe: Juwele nuus
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 nr.. 3: Dit is peervormig en weeg 94,40 sent. Dit is bo-op koningin Mary se kroon ingelê. (4) Cullinan IV: Dit is in die vorm van 'n langhoekleer en weeg 63,70 sent. Dit is op die sirkelvormige rand van koningin Mary se kroon ingelê. Die 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 […]
Die unieke eienskappe van diamant laat dit 'n paar snykenmerke tydens die verwerking laat, Hierdie eienskappe word nie deur diamant nabootsings besit nie, Dit is dus moontlik om diamante en nabootsings te identifiseer. 1. Fasette, edges and corners The high hardness of the diamond determines that the diamond has a flat surface, Reguit rande, en skerp hoeke, wyle […]
In 1970, Tel Aviv was reeds een van die wêreld se belangrikste diamantsnysentrums. Van sy aanvanklike fokus op die sny van klein diamante, Israel het in die 1980's in 'n groot snyer van groot en spoggerige diamante verander. 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. In die 15de eeu, it has become the center of diamond cutting and trading. In the 20th century, it became the center of cutting and grinding large diamonds. Vandag, it has undoubtedly become the world’s most rough and cut diamonds. Trading hub for […]
The object of color grading is Cape series diamonds, which are graded from colorless to light yellow according to color density. Colorless to light yellow with continuous color changes are artificially defined as a series of boundaries. These boundaries are also color levels, which represent a certain color density range. The higher the color level, […]
Gemology nowadays originated in the eighteenth century AD. Before that, humans in ancient times had known to decorate themselves with animal bones, skulpe, vere, beautiful stones and other objects. With the development of history, different jewelry cultures have gradually developed. What can be called a gem? Eenvoudig gestel, all kinds of materials that can be […]
Die geologiese toestande van edelsteenvorming verskil, en die verspreidingsgebied van edelstene hang hoofsaaklik af van die eienskappe van die rotsmassa wat deur die edelstene gevorm word. Byvoorbeeld, diamante word in Kimberliet gevorm, maar nie alle Kimberliete produseer diamante nie. Dit hang steeds daarvan af of die gebied voldoende toestande het vir diamante om te groei; en […]