Since the year 2013 Thundereggs from chinese location Pujiang are offered on the Internet and on the international market of agates, which can have a very beautiful and intense colour. Meanwhile (2015), it has become difficult to get specimen of good quality from China.
Were once (according to the collector Manfred Jäckel) "... the specimen quite bright in the matrix and good colors rarely, so they are now quite dark in the matrix and no longer of an intense staining... The recent findings appear in greater depth and / or in an other “bed” ...".
Rough thundereggs or cut specimen are similar in the exorbitant prices like the nodular agates from Shinggu.