Why are Some pieces Crackle finish, not over Complete piece, as in your example?

by DD
(USA)

Hello, & Best Regards, Why do some pieces have Crackle finish, but not completely over entire piece? as in your example. Thank you

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crackles
by: peter

This should be explained here.
https://www.chinese-antique-porcelain.com/glaze-characteristics.html

There are some items which are decorated with two or more glazes, one of them being crackled. But, I assume you mean one like the blue and white snuff bottle with crackles, shown only partially?

Many items actuall develop crackles during firing and have very fine crazing from the very beginning. Mostly this is invisible, however, because the crazing is too fine and can be seen only with a good magnifier.
When an item appears to be partially covered with yellow or brown crackles, the crackling usually covers the whole glaze, but the part that is visible is so because the crackles were infiltrated by sediments or substances that discolor the fine lines and make them visible to the eye.

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