细砂纸 meaning in English

crocus paper

Cultured and natural pearls will feel slightly rough , like fine sandpaper , because of the texture of natural nacre
。天然珍珠和人工养殖珍珠会有些许粗躁的感觉，如同细砂纸般，那是真珠质的天然触感。
Rub the diamond on a sandpaper for several times . if there ' re some marks on the surface , it ' s forged . if no marks , it ' s a real diamond
将钻石放在细砂纸上来回擦几次，其表面有擦痕的则为假钻石，无擦痕的则为真钻石。