We usually wear need to pay attention to changes in dryness and humidity, to prevent wind, sun and rain, and to prevent air-conditioning and heating blowing, avoiding water and oil, otherwise the surface is prone to cracking.

Can be placed in a sealed bag or jewelry box to save, and slightly moistened grease maintenance. Recommend the use of petroleum jelly, baby oil and other mineral oils, do not use cooking oil, cooking oil is easy to mold and bacteria.

In addition, the hardness of mackerel stone in the Mohs 3 or so, dry mackerel stone fingernail difficult to scratch, with toughness, do not cut with metal and other hard objects, or easy to produce scratches.

Tooth angle of a class of organic cultural toys usually appear aging phenomenon, also known as the pulp, mainly due to oxidation and changes in dryness and humidity, generally ranging from a few years to decades, depending on the specific preservation conditions. Fish stone aging pulp effect as the effect of the old amber open slice, for the dragonfly wing pattern, but also rich in beauty.

The mackerel stone is also known as black carp (huàn) stone, fish shock stone, fish essence stone, fish pillow stone, for the mackerel occipital bone below the pharyngeal part of a used to assist in crushing the snail and other hard food keratin growths. Its color is yellow and tender, its shape is like a heart, hard as a stone after drying, crystal clear, such as jade, in the Hakka region as a precious item. It can be tied on a string on the wrist of a child, which is said to drive away evil spirits, prevent children from being frightened, and bring good fortune and prosperity, hence the name of Fish Surprise Stone. Precision crafted stone quality such as angel muscle coral, color than the Saiga antelope horn, limpid amber beeswax, people love to get rid of.