Kausar khan , for everyone FOR EVERYONE the limit permitted IN ANY AIRPORT is 10 000 dollars, counting if you have any money and jewelery .
We have have a store in Mexico, so we go for merchandicse to Dubai , I ama woman and not even for me is permitted to be traveling around with more than that! it could be considered money laundry ! ...
You just need to ask and keep the receipts of the jewelry stores , and even if you want to get back the taxes you payed , in the airport you just report you are traveling eith this jewerlry and want the tax back , so the official at the check points will ask you for the jewelery receipts and will check the rcedits and each piece of the jewelry , the store information and then will ask your for your passport and a credit card on your name ( or someone traveling with you name) , so they will make you refound directly to your credit card of these taxes .
this is also for diamons , precious stones and expensive watches.
Good luck!