Since the "Titanic" movie hit, when everyone knew that the heart of the sea gem in the movie was tanzanite, it attracted the attention of the jewelry market, and tanzanite became more popular. As the zoisite to which tanzanite belongs, its origin is scattered in many places in Europe and Australia, but the main origin [...]
Arhivele de categorii: Știri despre bijuterii
Olivina este un mineral silicat de magneziu-fier, aparţinând sistemului cristalin ortorombic. Indicele de refracție este 1.654-1.690, iar diferenţa de birefringenţă este destul de mare ca 0.036. De pe masa pietrei prețioase, liniile de creste ale fațetei inferioare devin suprapuse. Umbra dublă se datorează diferenței mari de birefringență, rata de dispersie este 0.020, [...]
Before the development of synthetic technology, the scientific name of hyacinth zircon is the closest natural gemstone to diamond, so zircon can be said to be the earliest natural substitute for diamond, because it has a fairly high refractive index and its dispersion rate is close to that of natural diamonds. Comparativ cu diamantele, the [...]
Moonstone is a kind of Feldspar gems of Feldspar. Feldspar and quartz are very common and very important minerals in the earth's crust. According to the characteristics of feldspar, it can be divided into Orthoclase and Plagioclase. Moonstone is a kind of orthoclase, cu un indice de refracție de 1.518-1.526, o diferenţă de birefringenţă de 0.005, o [...]
Calcite is a calcium-containing carbonate mineral. It is a very important mineral in the earth's crust. It is often used as a teaching material to explain the characteristics of gems, but it is rarely used as jewelry because it has a very high birefringence difference and a perfect solution. Motiv, although other gems also have [...]
In the gem trade, "carat" is often used as the unit of quality. The term carat, originally in Greek, means the seed of a kind of "carob tree" that grows on the Mediterranean coast of Europe. The ancients believed that the quality of each seed was the same, so it was used as a weight [...]
Humans have been searching, mining and using gemstones for nearly 6000 ani. De exemplu, the famous Chinese "Jad Hetian" has been discovered as early as the primitive society. Conform unor statistici incomplete, sunt mai mult de 600 kinds of gem mines discovered and mined in the world, and these gem resources are mainly distributed in [...]
Printre cele cinci continente, Asia nu este continentul cu cele mai multe soiuri și producție de pietre prețioase. Celelalte patru continente au propriile forțe. 2. Africa The African continent is extremely rich in gem production and is known as the richest gem warehouse on earth. Principalele pietre prețioase sunt diamantele, smaralde, tanzanite, smaralde aurii, rubine, [...]
Puterea de dispersie a diferitelor pietre prețioase este diferită. Este de obicei exprimată prin diferența dintre indicele de refracție măsurat de lumina roșie la 686,7 nm și lumina violetă. (460.8nm 1), și se numește valoare de dispersie. În general, valoarea dispersiei mai mare decât 0.03 se numește dispersie puternică. Colorless or light-colored gems with strong dispersion can [...]
1. Helps identify gem species There are special inclusions in some gems, iar tipurile de pietre prețioase pot fi determinate prin studierea acestor incluziuni. De exemplu, rubinele conțin adesea particule de rutil în formă de ac, și se intersectează la 60 unghiuri. Acest lucru este determinat de simetria rubinului însuși. Prin urmare, it is a unique inclusion of [...]