My mother gave me a jade pendant with gold setting on it. The jade pendant was from my grandmother and I think it is at least 50 years old.
This is a bit old fashion for me. I want to ask your opinion whether I can re-melt the gold and do some design on the jade itself. At the back of the jade there is a very faint marking, something like 9K.
It is better that you keep the pendant for several reasons:
The sentimental value is there. Once you re-melt it you will not be able to re-cast it exactly as it is.
I would estimate that there are less than 3 gm of gold there. If it is a 9K, then the amount of pure gold (or 99.99%) is less than 1.2gm. The goldsmith will charge you at least 20% of gold loss. So probably you will have 0.8gm of pure gold. You will probably get less than US$40.00 for it.
Nowadays to do this type of design it will cost you at least $250 for workmanship. This type of filigree work was quite common about 30 years ago. Moreover, it is difficult to find those old timers goldsmith who can do this type of work.
I have many clients who brought me old jewelry for re-melting. My advice to them is to retain it as the amount of gold they realized is very little. After hearing from me, they begin to love their jade and their design, perhaps at first they were quite biased that their old piece is not fashionable at all.
If you take it to a goldsmith for re-melting, chances are he will keep the pendant and pay you something for the gold. And he can find a fitting jade pendant to mount it and the goldsmith has a lovely pendant to sell.
Now judging from the photo you sent me, your jade piece is green but it lacks translucency. This type of carving also lacks details and the craftsmanship is indicative that this is an old piece.
Dirt might have accumulated along the edges where the gold is set. So take it to a goldsmith and clean it. They will use an ultrasonic machine to cleanse all the dirt out.
Believe me, after cleansing the jade you will love the piece.