Dear Carmela the only way to know for absolute sure it's a natural pearl is by xray. If you would like a valuation based on the most likely scenario of it being a natural pearl you can have it valued on our website by experts specializing in pearls. If on the other hand you want to be sure its a natural pearl reply below and will provide a link which will include all details of where you can have it tested. The Online appraisal form can be found by hovering mouse over services, (above menu bar) then clicking on online appraisals.
Getting it made into a pendant. You would want to see as much natural pearl as possible if you were to have it made into a pendant. I would suggest wire sculpture for this purpose, I can refer you to one of the best wire artists on the planet.
