It is an artificial pearl made of pearl processing. The size of the hole is about 6 mm, about 8 mm, about 1.2 mm, and about 10mm is about 1.4 mm. Can be connected directly through wire hoop by connecting parts, etc. It is very light and recommended for accessories with volume. * there is a clogging of the hole by the painting and the Bali on the manufacturing process. Please use this after removing the clogging with needle or eyeball. Please be careful when removing the burr.