Coral grows in the sea, like branches and flowers. For a long time, it has been mistaken for a marine plant. It was not until the 1920s that coral was not a plant, but a coelenterate-calcium carbonate skeleton secreted by marine corals. Coral has many kinds and qualities. Red coral belongs to eight-shot coral.

Characteristics of red coral

1. Material composition: It consists of inorganic and organic parts.

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.

2. Structural features: wavy 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.

3. Physical and chemical properties

The colors are crimson, fiery red and pink. Dendritic. The bones are dense and tough. Hm = 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.

Methods/steps

1. Avoid heavy blows and collisions, so as to avoid coral shedding and damage. Coral itself has natural lines, but coral hardness is relatively low, brittle and easy to damage.

2. Wipe with a soft cloth after each use and keep it properly.

3. Be sure to soak in water and wipe off the oil.

Please always wear coral jewelry to keep it in harmony with human spirituality.

5. The chemical composition of coral is calcium carbonate, and its chemical properties are unstable. People should not wear coral necklaces for a long time when sweating in hot summer, because the salt and acid secretions in sweat will corrode corals. Coral should not touch cosmetics, perfume, alcohol, salt, oil and vinegar.

6. Try it lightly with colorless waxy baby oil or olive oil, leave it overnight to restore luster, or go to a professional company for polishing and cleaning.

Matters needing attention

Coral color is pure natural and should not fade. The red coral bracelet changes color, indicating that it is not red coral, but dyed. You can find the store to identify it.

Natural coral jewelry has the following characteristics: it has a natural oblique texture, and each coral is different. Natural defects, such as small white spots, small black spots and small spots, are normal, not defects.

Wearing red coral jewelry can promote blood circulation and produce various color changes according to everyone's physical condition, which can be called an observation station of human spirit.