Judging from the discovery process of emeralds in the world, it is not difficult to see that the main origin of emeralds is Colombia in South America, and many legendary emerald treasures also originated from Colombia. 1. Devon emeralds Devenshire Emerald (Devenshire Emerald), discovered in the Muzuo mining area in Colombia in the 19th century, [...]
Kategorie -argiewe: Juwele nuus
Guinness Emerald Crystal, weighing 1759ct, is produced in the Coscuez mining area in Colombia. It is also one of the largest high-quality emerald crystals found in the world. It has created the world's largest high-quality gem-level emerald Green Guinness World Records. The length of the crystal is 2-2.5 times the diameter, the color is bright [...]
Opaal is ook 'n edelsteen met 'n lang geskiedenis en word in mineralogie kosbare opaal genoem. Van 200-100 vC, mense het opale as edelstene begin gebruik. In antieke Rome, opale was nie net bekend nie, maar ook uiters waardevol. Plinius, die antieke Romeinse natuurkenner, het eenkeer 'n baie wonderlike beskrywing van Opal gegee: "Opal has a ruby-like [...]
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 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 diamant is nou gestel as [...]
Die identifikasie van ongeslypte diamante met die blote oog moet by die volgende aspekte begin. (1) Observe the gloss Since diamonds have a typical diamond luster, wat 'n belangrike kenmerk is wat ander kleurlose en deursigtige minerale onderskei (of materiaal), diamante kan van ander nabootsings onderskei word deur hul glanseienskappe te gebruik. 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 groot 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. Die diamantverwerkingsfabriek in Israel staan bekend as die model van die hoogste vlak van diamanttegnologie [...]
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 [...]