How to tell the true from the false:
1, look at the color. Natural coconut shells are light brown or dark brown. If the surface of coconut shell soaked in potassium permanganate solution turns black completely, there will be pits on the surface.
2. Observe the shell. The surface of coconut shell usually has many pits and bran color, which still exists after long-term play, while the bottom of coconut has almost no pits and bran color.
Step 3 weigh. True and false coconut shells or coconut stems with the same volume have different compositions. The real basic material is dense, so the composition is also very heavy.
4. Look at the size of the beads. Coconut shell bracelets with a thickness of more than 8 are almost all from coconut stalks. When the thickness reaches about 10, a coconut can only take out one coconut bead.
Extended data:
1, distribution: ecological environment: born in coastal areas of long tropical areas. In China, they are mainly distributed in Taiwan Province Province, southern Guangdong Islands, Leizhou Peninsula, Hainan, Guangxi and Yunnan.
2, characteristics: character identification, horny flake, brown, extremely hard.
3. Function: Use coconut shells to carve some patterns and figures on coconut shells, and even make doll heads and folk artworks of various animals. This product is particularly abundant in Hainan.
Baidu encyclopedia-coconut shell