1, to avoid scratches. Cinnabar is not very hard, so you should pay attention to avoid collision and scratch when wearing it. When not in use, it should be wrapped with soft objects for protection or stored in a soft jewelry box.

2. Avoid contact with chemicals. Cinnabar itself is not resistant to acid and alkali, so try to avoid contact with perfume, cosmetics, chemicals, soap or human sweat to prevent erosion.

3. Try to avoid heat sources. Such as sunlight, stoves, electric heaters, etc. Because cinnabar will expand when heated, the increase of molecular volume will affect the quality of jade, and serious cracks will appear.

4. It is best to caress it often. When you are free, you can gently rub it in your hand or touch it on your face, so that there will be no grease on the surface of the bracelet and it will be more quaint and elegant over the years.

5. After cinnabar bracelets are stained, they must not be soaked and washed with clear water. Because cinnabar is a granular aggregate composed of various minerals, if it is soaked and washed with water, the dirt on the surface of the gem will penetrate into the interior, thus changing the original luster of cinnabar. You can gently wipe off the dirt with a wet cloth, or find a professional jeweler to deal with it.

Extended data

Identification of counterfeit cinnabar

False 1: Chu Shi is oxidized hematite. Most of them are crushed into irregular small pieces or powders, which are dark reddish brown to brownish red, with inconspicuous metallic luster, hard texture and cherry red stripes. The extracted stones mainly contain iron oxide (fe2o 3), which is soluble in strong acid. The powder dissolved in hydrochloric acid turns blood red when adding thiocyanate test solution, blue precipitate when adding potassium ferrocyanide test solution, and brown when adding 2500 sodium hydroxide test solution (Fe, 10%). ?

Fake product 2: slag sand dyeing. The main differences between them and genuine cinnabar are: deep red and light weight. Washing can dye water, but the red color of slag and sand becomes lighter or faded, and there is no metallic luster. Physical and chemical identification was negative. ?

Counterfeit product 3: A dark red ore (variety to be determined) is irregular, dark red, slightly shiny, with smaller specific gravity than the genuine product, slightly fibrous in cross section, more fragile than the genuine product, insoluble in water and partially soluble in strong acid. Physical and chemical identification was negative. ?

Counterfeit 4: There are two main kinds of adulterated cinnabar. One is mixed with stone silo, laterite or dyeing residue, which is generally uneven in color, washed with water to remove color, and the specific gravity between particles is quite different. Another kind of particles mixed with metal foreign bodies, such as iron, can be adsorbed by magnets and added with dilute acid to generate gas.

Baidu encyclopedia-cinnabar