Kuro-choogai, Black-lipped Pearl Oyster, Thick 1mm/黒蝶貝厚貝　１ｍｍ厚

Thin black lip oyster is for mother-of-pearl inlay. It has three pigments reddish-brown, greenish-brown, and yellowish-brown.

The mixture of these three pigments produces a variety of colors, such as black, red, green, and yellow.

Size: about 37mm*37mm/ 1mm thick The size can be slightly different as it is made of natural materials.