These vases are made in Yixing, the Chinese capital of quality ceramics for Bonsai.
Given the handcrafted nature of the vessels, there may be small differences in the size of the vessel, or slight variations in the hue.
The word Bonsai, consists of 2 characters, which mean "pot tree", so the importance of the vase in this art, is (almost!) equal to that of the plant.
The vase is for the Bonsai, as the frame for the frame", it should highlight the beauty of the plant, without stealing its attention, different styles of Bonsai require different types of vessels.
Horticulturally, the vase of Bonsai have to have certain chemical and physical characteristics that allow cultivation for long periods of a tree inside, these objectives are achieved with the use of high quality grates and specific manufacturing processes.
For more information about vases see:
