Being a registered jewellery valuer is NOT a requirement to be able to write valuations. In fact, many people writing valuations aren’t even gemologists!
To become a member of the National Council of Jewellery Valuers. (see their website at http://ncjv.com.au) , you must have prior gemological training, have some industry experience and pass a rigorous set of coursework.
In addition, members of the NCJV must agree to work to a Code of Ethics. (http://ncjv.com.au/Code_of_Ethics). This ensures that we have your best interests at heart. I am not buying or selling anything other than my educated opinion.
As a member of the NCJV, I have access to a network of valuers around the country. Everyone has a different path in their career, and so some are experts in areas that others are not. I value the ability to compare notes with other educated valuers.