Diamonds

Kunstteemant on looduslikule teemandile peaaegu identse koostisega kivi, mis on kasvatatud spetsiaalsetes laboritingimustes. Kunstdiamante ei tohi segi ajada fianiidi ja moissanitiga. Kui kahe viimase puhul on looduslikul teemandil palju erinevusi, mis võimaldavad võltsingut tuvastada isegi koduste testide abil, siis tehisteemandi puhul on kõik palju keerulisem. Proovime aru saada. Tehisteemandid - mis need on ja kuidas neid valmistatakse Esimesed tehisteemandid sünteesiti juba XX sajandi 50ndatel aastatel. Kuid alles 90ndatel õnnestus proovid viia juveelitööstusele huvipakkuva suuruseni. Tänapäeval on kaks peamist tootmistehnoloogiat. HPHT-süntees Tehnoloogia, mille puhul kasvatatakse teemant väikestes kapslites kõrge rõhu all (kõrgsurve- ja kõrgtemperatuurist). Tooraineks on teemantpulber, mis lahustatakse sulatatud metallivoolus ja seejärel kristalliseerub seemnele. Kasvatusprotsess võtab...

Kas te plaanite osta teemantidest ehteid, kuid ei tea, kuidas neid valida? Selleks, et mitte teha ehte ostmisel viga, peate oskama lugeda nende briljantkivide omadusi. See ei ole keeruline. Teemandi valimine selle omaduste järgi Võib-olla kõik teavad, et teemantide hind sõltub nende kaalust, mida mõõdetakse karaatides. Pange tähele! Karat on vääriskivide kaalu mõõtühik, see on 0,2 grammi. See tekkis juba Vana-Roomas: karaat on karamuseeme, mille mass on 0,18 kuni 0,22 grammi. Kuid mitte ainult kaal ei mõjuta kivide väärtust. Teemanti hinnatakse järgmiste omaduste järgi: Lihvitud kuju lihvimiskvaliteet puhtus Karat Värvus Nende parameetrite summa mõjutab lõplikku hinda. Lihvi kuju Tulevase teemandi lihvi kuju valib juveliir lähtuvalt kivi loomulikust suurusest ja kujust. Spetsialisti ülesanne selles etapis on vähendada t...

The history of large gemstones is a story of passion and crime, of blood and dark secrets, of fulfilled prophecies and terrible curses. They excite, mesmerize as much as the dazzling brilliance of the gemstone around which they exist. Do you like frightening stories? Then this one is about the Kohinoor, a diamond that has brought incalculable calamities upon all its owners. Only a century and a half ago, the English Queen Victoria managed to stop the curse of "Kohinoor" - the diamond, because of which the blood was shed for centuries. But first things first. "Kohinoor" ("Kohinoor", "Koinoor", "Koh-e-Noor") is a colorless oval diamond weighing 105.6 carats (21.12 grams) with 66 facets. Traditionally, large top-quality diamonds are cut with 58 facets, but Kohinoor's jeweler added 8 more to bring out its incredible brilliance. History of the name "Kohinoor" is a diamond whose appearance is lost in the darkness of not even centuries, but millennia. Even the history of its modern…

In this age of fakes and copies, all consumers have to keep their eyes open. After all, it is so easy to fall prey to unscrupulous comrades and get something of lesser quality instead of the coveted luxury product. This applies to all spheres, including jewelry. So, let us remain vigilant and doubt everything. An experienced jewelry connoisseur always scrutinizes the characteristics of the jewelry and will be wary if he reads that the stones in it are ennobled. Isn't it a fake? What is behind the name "clarified diamonds"? Are they diamonds or just another synthetic clone? And if diamonds are real, how are they ennobled and, most importantly, why? Let's get to the bottom of it. Fig.1. On the left - a polished diamond, on the right - a natural diamond What is a clarified diamond Nature, like any craftsman, can also make mistakes, and sometimes its creations are imperfect. From the human point of view, of course. Thus, about a quarter of all gem diamonds mined in the world ha…

The capital of Saxony, Dresden, is a unique museum city that has been called the German Florence. It resembles a treasury or a precious necklace, where, at the whim of a skilled craftsman, genuine relics neighbor and harmoniously complement each other. One of them is the Dresdner Grüner Diamant (Dresden Green Diamond), a famous large natural diamond of apple color, excellent cut and almost flawless clarity. Now it is kept in the richest European jewelry collection of the "Grünes Gewölbe" (Green Vaults), a museum located in the restored palace of Elector Augustus the Strong. Fig.1. Hat brooch-agraffa with Dresden green diamond The pear-cut emerald diamond shines in the center of the hat brooch-agraffa among its hundreds of white counterparts. It is the only naturally occurring green diamond in the world so large and this puts it on par with the Kohinoor, Cullinan, Hope's Blue Diamond and other legendary treasures. The fantastic color and unique characteristics of the Dresden …

The most important stage in the processing of gemstones, which determines their appearance in the future, is, of course, the cut. It is quite possible to get confused in the varieties of faceting, but all experts divide them into 3 groups: diamond; step; mixed. In this article, let's talk about step cuts. And let's consider the most popular step cut for Emerald cut diamonds. In general, a step cut of any type ("octagon", "asher" and others) implies a parallel arrangement of facets. This means that a crystal subjected to such a strictly geometric treatment can only have a rectangular or square shape. Such symmetry, of course, worse reveals the brilliance and play of the stone, but perfectly emphasizes its purity, depth and transparency. In addition, it is ideal for colored minerals and crystals with a hue. Rectangular diamonds from Cartier But back to our diamond "emeralds". As is clear from the name, the first stone for which such a cut was used was not a diamond at…

Like many beautiful and exquisite things, the diamond has a direct connection to France. More precisely, the word "diamond" comes from the French language and means "brilliant". However, all over the world it is customary to say diamond, but brillant is mentioned only in the context of cutting. And this is logical. A natural diamond is a stone that is not very attractive outwardly. Only a quality cut turns it into a sparkling perfection. What is the classic and reference cut of a diamond? There are 12 main types of diamond cuts. At the same time, mankind has preferred the classic round cut - Standard Round Brilliant cut - to all others for more than a century. From 75% to 90% of diamonds sold in the world at the moment have the traditional shape and 57 or 17 facets. Who invented the round brilliant cut? History of creation The history of the perfect diamond dates back to the 17th century, when jewelers began to master new faceting techniques to bring out the beauty of the ge…

Fig. 1 The weight of one carat of a diamond in grams When choosing a piece of jewelry in a jewelry store, the first thing you look at is the tag. And when a piece of jewelry has diamonds, the tag always indicates their weight, but not in grams, but in carats. Of course, you have questions - how much does 1 carat of diamond weigh or how many carats are in 1 gram of diamond? Let's answer it now. Grams and carats: weight ratio The ratio of grams to carats is 1:5. One carat of a diamond contains only 0.2 grams or 200 milligrams. Accordingly, there are 5 carats in 1 gram. The weight of gemstones is estimated only to thousandths of a gram (the third digit after the decimal point). How the carat emerged The history of weighing gemstones in carats begins in ancient Rome. Not having accurate scales at hand, Roman jewelers and merchants used other ways to determine the mass of stones. There is a carob tree whose seeds are always the same size (about 1 cm) and weight - 0.2 grams, or, m…

Igaüks meist vähemalt kord elus, kui ainult uudishimu pärast, kuid vaatas horoskoopi ja teab, kes ta on vastavalt sodiaagimärgile. Ja see on ka mõistlik - tähtkujud annavad oma hoolealustele teatud ühiseid tunnuseid. Vaevalt võib ju pidada juhuseks, et "maapealsed" Kaljukitsed, Neitsid ja Sõnnid - näiteks Stephen Hocking, Newton, Kurtšatov, Kapitsa, Jeanne d'Arc ja Oleg Deripaska - on pragmaatilised, töökad ja sihikindlad. Ja kõik, kes suhtlusringis "õhu" kolmainsuse esindajatega märkisid, et sageli on need seltsimehed - loomult loomingulised, kuid veidi kergemeelsed. Näiteid: Puškin, Lermontov, Esenin, Tsvetajeva, Dickens, Byron. Noh, kuidas on lood element tulega? Jäär kuulub märkide "tule" trigonisse ja hõivab selles kolmainsuses auväärse esimese koha. Kõigega, mis sellega kaasneb. Jäär naised - sündinud juhid: säravad, spontaansed, energilised, enesekindlad ("Ma näen eesmärki, ma usun...

Tähtkuju avab kogu tulise kolmiku kõige eredama, karismaatilisema ja temperamentsema märgi. Jäär ühendab mehes orgaaniliselt inimkonna tugeva poole kõige väärtuslikumad omadused, mistõttu Jäär on sageli nimetatud mehelikkuse etaloniks. Ta - nutikas, visionäär, särav, kangekaelne ja enesekindel viiking, kes viib oma drakkari alati täpselt sihile ja kõik pardal olevad sõudjad ja sõjamehed alluvad tingimusteta tema käskudele. Ja ta on ka vastassugupoole jaoks vastupandamatu. Steven Seagal, Marlon Brando, Elton John, Ronaldinho, Pavel Bure, Da Vinci, Bach, Francis Ford Coppola, mitmed diktaatorid, kes kunagi raputasid maailma põhja - kõik need inimesed ilmusid Jäär tähtkuju all. Pole vaja öelda, et nad on rohkem kui tähelepanuväärsed ja tugevad, eelkõige vaimult? Niisiis, kui olete sündinud Jääramärgi all, olete õnnelik. Ja kui sa oled daam ja sinu lähedaste meeste hulgas on Jäär, siis oled kahekordselt õnnelik. Tõsi, kingitustega lonkab - "fier...