"Natural" Pearls are a thing of the past. Today all Pearls today are 'cultured'. If you were to find a Natural Pearl it would be at an auction house such as Sotheby's and would typically come with a provenance or history dating back to the documentation of the origin of the Pearl. The culturing process started in the 1920's by Mr Mikimoto who had a dream that 'every girl could afford Pearl'. Almost 100 years later we are living that dream. Prior to the 1920's Pearls were the exclusive domain of royalty and throughout history only the wealthiest have been able to own them! A Pure Pearl Pendant is one of the only pieces of jewellery that can be worn with literally anything! These classic pieces will look just as stunning with a pair of jeans, a formal gown or a bikini! All Australian Pearl Divers come with an international lifetime guarantee and warranty and are guaranteed to be free of dyes, bleaches, chemical treatments and absolutely free of synthetic materials! Technical Specifications Genuine natural cultured Pearl. An organic gem produced as calcareous concretions within the soft tissue (specifically the mantle) of a living shelled mollusk or conulariid. Composed of calcium carbonate (CaCO3) mainly aragonite or a mixture of aragonite and conchiolin calcite “nacre” in minute crystalline form, which has been deposited in concentric layers. Nacreous and iridescent and guaranteed to be free of plastics, synthetic materials, dyes or artificial colours.