Having purchased some Tibetan silver jewlery recently the following has come to light. An investigation by a UK assay office shows the base material to have 12.4% nickel content under a thin plate of silver. The Dangerous substances, Nickel safety. Instrument 1668 bans these items from sale in the UK as the nickel can lead to a dermatological reaction. Read the full regulations on the internet under nickel regulations and uk search or teg.co.uk, and then search for nickel.
If you purchase earrings of this type then ensure you know how large the ear piercing in your ear has to be to be able to wear them. In the opinion of a Birmingham valuers the size of the wire is too large for normal UK ear piercings.