The mackerel stone is a hyperplastic horny pad used to assist in crushing the snail in the throat area below the occipital bone of the mackerel, which has evolved over the years. Grass carp, carp also have, most other fish do not have this stone, so it is rare and precious. The material is stable and can be preserved for a long time after it is taken down and dried naturally. Its color is yellow and tender, its shape is like a heart, hard as stone after drying, crystal clear, such as jade, in the Hakka region as a precious item. Precision production of the quality of the green fish stone such as angel muscle coral, color than the Saiga antelope horn, limpid like amber beeswax, people love it.

Green fish stone for the green fish occipital bone below the throat part of a used to assist in crushing the snail growth of keratin pads evolved over the years. Grass carp, carp also have, most other fish do not have this stone, so it is rare and precious. The material is stable and can be preserved for a long time after it is taken down and dried naturally. Its color is yellow and tender, its shape is like a heart, hard as stone after drying, crystal clear, such as jade, in the Hakka region as a precious item. Precision production of the quality of the green fish stone such as angel muscle coral, color than the Saiga antelope horn, limpid like amber beeswax, people love.