Jewelry, Gems, & Minerals/self pickling flux


Hello, Thomas I am shailesh from India .I am a silver job worker here. we make our flux ourself with borex and ammonium cloride. we have green yelloish liquid which is used in immitation jwellary. My question is which chemicals is used in this flux, and what cause the green yelloish colour? If this question is interfear with your laws of answers policy, you may refuse to give answer.I am science graduate(physics) so I can understand theorical anser too.I am curious by nature so I am asking you this question there is no ill intention of my question. thanks .

Dear Shailesh, If I had the answers, I would provide to you.

The liquid flux used as "self pickling flux" for soldering silver and other hard soldering contains sodium borate and ammonium chloride. The color is from a dye added and does not affect the flux. Without dye the flux works just at with the added color.

Flux for imitation jewelry might be one of several chemicals or ingredients used for low temperature joining with "soft" or tin based solders.  One product contains ZINC CHLORIDE, HYDROGEN CHLORIDE, AMMONIUM CHLORIDE, WATER and METHANOL. The soft soldering fluz is slightly acidic.

Shailesh, I do not know the measure of each ingredient.

Perhaps this information will be of some value to you.

God Bless and Peace.  Thomas.  

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Have a question about jewelry repair or working with precious metal jewelry and gemstones? For many years up to December 31, 2010, I was a working professional bench jeweler, involved everyday with setting stones in mountings, designing and making jewelry, repairing and limited custom manufacture. If you work with jewelry as a hobby or as a profession, I might be able to help. I deal with the retail business, not mass production. Ask privately if you wish. See the box for that: It keeps your question between us. Please DO NOT ask MAKER'S MARKS, but metal quality marks are fine to ask. Please DO NOT ask diamond prices. See a gemologist for that.


I have extensive experience in design, service and making of jewelry. I deal mostly with precious metals and gemstones but work with many materials as needed and usable to create an artistic design. My experience also includes freelance photography and photographer of jewelry and similar items for a former employer and individuals. Design of custom items requires reading the desires of the client and being clear on what can be done within that framework...then fulfilling the transition of idea to reality. Effective communications is essential in a working designer/producer and customer relationship.

Education is English/Physics! Started in human resources, to advertising, to, what a road. I have had formal training in jewelry work and many shared experiences with top grade jewelers. We just never know were we will go or be. Follow your best, your dreams, with some discretion! Don't let the work tear up your body along the way as it has mine.

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