As of March 23rd 2009 children's jewelry made in & shipped to the USA came under the full effect of the CPSIA. There is no stay of testing for products that the CPSC or the general public considers jewelry for primarily for children 12 and younger. All testing must be done by labs that have been pre-approved and certified to do CPSIA specific testing.
You can choose to use all exempt materials like precious metals that have either certifications (like a listing stating the items is Sterling Silver) or hallmarks (like 14KT on a earwire) as to their purity in conjunction with certain naturally occuring raw materials,like untreated wood and shells, as well as precious and semi-precious stone materials, but the jury is still ambiguous about if any enhanced or treated stones are allowed. Foe pieces that involve non-exempt materials you can choose to have either samples of your components tested or samples of the finished product tested. Almost all jewelry component suppliers are unwilling or unable to provide properly formated manufacturer supplied testing certificates. The testing information then needs to be tied in your files to a GCC that you keep on-hand for each specific item or batch produced.
Also you need to follow the proper labeling under the CPSIA. Since most jewelry is too small to have the permanantly attached tracking label it needs to be on the packaging. So you need to include all the required info on the box or bag that you ship the jewelry in.
Additionally needed is small parts testing if you choose to market the jewelry to or for the use of children under 7. If the product fails the testing you need to include in both your listing and again on the packaging of the item a warning that the piece is not for the use on or by children 3 and younger, but you can still market it as being used by or on a child 4 to 6 years old.
For the current full list of raw materials offically exempt from CPSIA lead testing please read
http://www.cpsc.gov/businfo/frnotices/fr09/leaddeterminationsfinalrule-draft.pdfAn update on the stay of 3rd party & component testing
http://www.cpsc.gov/cpscpub/prerel/prhtml10/10083.htmlTracking labels required on every product for children under 13
http://www.cpsc.gov/about/cpsia/sect103policy.pdfA general overview from the CPSIA for Small Bussinesses
http://www.cpsc.gov/about/cpsia/smbus/cpsiasbguide.htmlThe CPSIA main pages
http://www.cpsc.gov/about/cpsia/cpsia.htmlA gateway page for summeries of the law by subsection
http://www.cpsc.gov/about/cpsia/legislation.html#summariesHere's info about small parts warnings
Small Parts Regulations Summary
http://www.cpsc.gov/BUSINFO/regsumsmallparts.pdf Small Parts labeling
http://www.cpsc.gov/BUSINFO/label.pdf and how they should appear in your listings / ads
http://www.cpsc.gov/LIBRARY/FOIA/FOIA08/brief/toygameads.pdf page 19 of the PDF has the abbreviations & page 20 of the PDF has the warning examples are in black-n-white but I believe they need to be in certain colors on the actual label for the physical product.