Since every gemstone has its own specific conditions of formation, chemical composition and internal structure, there is still no uniform classification scheme in the world. How to classify gems scientifically and reasonably is a topic of common concern in the international jewelry industry. În prezent, countries around the world agree with the classification of gems […]
Arhivele de categorii: Știri despre bijuterii
In nature, all materials that have bright colors, crystals, and brilliance; pure texture, hard and durable; excellent craftsmanship; rare characteristics that can be processed into jewelry and handicrafts can be called gems. These materials include: natural mineral crystals (single crystals and crystal aggregates), amorphous rocks, and natural organic materials and man-made materials. În general vorbind, unprocessed […]
Până acum, mai mult decât 4,000 kinds of minerals have been discovered in the world, of which nearly 600 can be called gems, and about 30 common gems. The factors considered for the classification of gems include: the genetic type of gems, the habits and traditional culture of the international jewelry industry, and the traditional Chinese […]
Motivul pentru care sunt numite pietre prețioase “comori” este culoarea lor frumoasă. Deci, care este culoarea atractivă a pietrelor nestemate? De unde a venit? Culoarea este o undă electromagnetică care poate fi resimțită de ochiul uman cu o anumită lungime de undă. Gama sa de lungime de undă este aproximativ 400-700 NM în spectrul electromagnetic, cunoscut și sub numele de […]
In chromatology, the three elements of hue, lightness and saturation are used to describe colors. Hue, also called hue, refers to the distinguishing characteristics of red, orange, yellow, verde, cyan, albastru, and purple. The hue depends on the selective absorption of visible light by the gem. Brightness, also known as brightness or hue, is the […]
The beauty of gems comes first in color. În plus, transparency and luster are all its charms. Transparency refers to the ability of a gemstone to transmit light. Usually divided into: transparent, translucent, translucent, translucent, opaque. Transparency: easy to see through the light, clear bottom, the outline and details of the scene can be clearly […]
The ability of a gemstone to resist pressing, scoring or grinding is called its hardness. The hardness of a gemstone is related to its chemical composition, chemical bond and crystal structure. Hardness is one of the three essential elements of gemstones, and it is also a problem that must be paid attention to in gemstone […]
Electrical conductivity is the ability of a gemstone to conduct electricity. It largely depends on the type of chemical bond. Gems with metal bonds are highly conductive because they have free electrons in the crystal structure, while ionic bonds or covalent bonds are weak or non-conductive. În plus, the conductivity of gems is also related […]
Under the action of external force (such as beating, squeezing, etc.), gem crystals can regularly crack along a specific crystal direction to form a smoother plane. The property is called cleavage. These cracked surfaces are called cleavage surfaces. The cleavage surface is related to the atomic structure of mineral crystals, and is usually the weaker […]
Inclusions in gemology refer to three aspects: (1) The solid, liquid and gaseous substances inside the gemstone are called solid, liquid and gaseous substances. (2) The color zoning and distribution or growth pattern of gems. (3) Fractures, cleavage and cracks. The presence of inclusions often affects the quality of gemstones, but the regular arrangement of […]