CS178554B1 - Method for colour change of agate and chalcedony - Google Patents

Method for colour change of agate and chalcedony

Info

Publication number
CS178554B1
CS178554B1 CS617974A CS617974A CS178554B1 CS 178554 B1 CS178554 B1 CS 178554B1 CS 617974 A CS617974 A CS 617974A CS 617974 A CS617974 A CS 617974A CS 178554 B1 CS178554 B1 CS 178554B1
Authority
CS
Czechoslovakia
Prior art keywords
chalcedony
agate
colour change
colour
change
Prior art date
Application number
CS617974A
Other languages
English (en)
Inventor
Drahos Rykl
Jaromir Francu
Original Assignee
Drahos Rykl
Jaromir Francu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Drahos Rykl, Jaromir Francu filed Critical Drahos Rykl
Priority to CS617974A priority Critical patent/CS178554B1/cs
Publication of CS178554B1 publication Critical patent/CS178554B1/cs

Links

CS617974A 1974-09-09 1974-09-09 Method for colour change of agate and chalcedony CS178554B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS617974A CS178554B1 (en) 1974-09-09 1974-09-09 Method for colour change of agate and chalcedony

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS617974A CS178554B1 (en) 1974-09-09 1974-09-09 Method for colour change of agate and chalcedony

Publications (1)

Publication Number Publication Date
CS178554B1 true CS178554B1 (en) 1977-10-31

Family

ID=5408225

Family Applications (1)

Application Number Title Priority Date Filing Date
CS617974A CS178554B1 (en) 1974-09-09 1974-09-09 Method for colour change of agate and chalcedony

Country Status (1)

Country Link
CS (1) CS178554B1 (cs)

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