When looking to buy a natural ruby, there are a few things you should be aware of during your search. Natural rubies may undergo various treatments to bring out their properties. It is always wise to try to find out what treatments a ruby has undergone because some treatments are not desirable. In addition, it is easy to mistaken a synthetic ruby for a natural ruby. Thus, it is important to exercise caution and to do your due diligence in researching the history of a ruby before purchasing it.
Pearl culturing is the process where a nucleus (shell bead) or nuclei are inserted into a mollusk, which is an invertebrate animal with a soft, unsegmented body enclosed by acalcareous shell of one or more pieces. The mollusk will then coat the nucleus with nacre, and this will help create a larger pearl in a smaller fraction of the usual time.