I had the reverse scenario some yrs ago shipping to the US.
the 1st, was a registered parcel that never arrived. Post office
insurance paid out. Sent its replacement via a relative going to see
the customer, ie personal courier.
The 2nd was a similar, delivery by the parents of the bride and
You will need to google the Goldsmiths Co. Assay office London for
their rules on precious metal imports and the weight limits for
Then, you have the payment arrangements to organise to ensure they
cover all the costs including full replacement insurance.
you must get this in writing, ie legally safe.
Its a hard way to make living. Make sure your client is aware of all
Also hope they get the ring sizes right! Then you have to trust the
shipper to deliver and not screw up.
If you have to declare customs value on the packet its a giveaway to
getting it stolen.
A personal courier Co. is the way to go such as is used by
solicitors/ lawers delivering legal documents.