2. Avoid polluting red corals with liquids such as chemicals and perfumes.
3. Handle and wear carefully, and be careful not to knock against it to avoid falling and damage. Red coral has many colors, such as crimson, latosolic red, peach red, orange red, pink and so on. The redder the color, the more precious it is.
Extended data:
Red coral consists of inorganic matter and organic matter. Inorganic substances: high magnesium calcite, a small amount of apatite, calcium carbonate, magnesium carbonate, a small amount of water, ferrous oxide, calcium hydroxyphosphate. Organic matter: mainly keratin.
The colors are crimson, fiery red and pink. Dendritic. The bones are dense and tough. Mohs hardness =3.5-4, opaque-translucent. The raw materials are dark in color, waxy in luster after polishing, and resistant to acid, organic solvents and volatile gases.
Waveform parallel fiber structure. Along the longitudinal direction of coral branches, there are different shades of color or transparency, forming a continuous wavy parallel fiber structure. The cross section is concentric, like tree rings. There are many round pits on the branches, which are places where corals nest.
The preciousness of red coral leads fishermen to make fake profits. Since the Republic of China at the latest, celluloid made of pure chemicals has appeared. Its feeder is glazed with coral, covered with lead, coated with coral paint and painted with texture, carved into round beads with cow bones or talc, and infiltrated with red. This is a fake and shoddy product, sold in the name of coral.
Some of these counterfeiting methods have been passed down to this day, but it is not difficult to identify them: the "coral" made of materials contains bubbles inside, and the debris is shining, without real coral fingerprint patterns.
The "coral" made of glass is conchoidal fracture, but the real coral gap is smooth; The "coral" made of noodles is shiny and black. After a long time, it has cracks and the impact sound is dull; Coral stained with bone keratin can be identified by wiping with acetone.
Contemporary coral imitation uses advanced science and technology, such as white coral or sea bamboo similar to coral, and "synthetic coral" in gilson. It is extremely concealed. If we don't have rich experience or use scientific instruments to detect it, it's easy to confuse fish with pearls.
Coral imitations usually include dyed marble, red glass, red plastic and "gilson Coral" made of calcite powder and dye. These imitations do not have the internal structure of natural red coral, which can be distinguished by looking at the lines carefully; Particle structure of dyed marble.
Dyes are enriched in mineral particles, and the answer can be obtained by acetone test. The red glass type can be made very similar, and occasionally bubbles can be seen. From the hardness point of view, glass is larger than coral and does not react with hydrochloric acid; The density of red plastic is generally below 1.55, which smells when heated and does not react with hydrochloric acid. The coral density in gilson is 2.45.
First, please avoid heavy blows and collisions, so as not to damage the gem;
Second, please avoid contact with chemicals, acids, alkaline liquids and perfumes;
Third, please wipe it with a soft cloth after each use and keep it properly;
Fourth, please soak in water and rub oil often to keep it "bright and bright" again and again;
5. Please always wear coral jewelry to make it harmonious with human spirituality;
6. Please prepare a certain number of coral ornaments according to the season to ensure the effect of "as bright as new";
7. Red coral necklaces, bracelets and pendants without inlay are the best holy products for promoting blood circulation and health care.
References:
Baidu encyclopedia-red coral