Check if a potential manufacturer offers a detailed and authentic description of the creation process of the product on their website
See the Heart in Diamond creation process here.
Check if there is a video of the lab and the diamond incubators on the website.
If the answer is NO, then ask yourself – WHY?
Perhaps it’s because they just haven’t had the opportunity to create such images and videos.
Could it be that they don’t know the real creation process for diamonds?
Ask the manufacturer if you would be able to visit their lab?
If they decline then this could indicate that they don’t have their own premises.
Ask the manufacturer if they can offer you an authentication program to prove the origin of your diamond.
If they refuse then ask yourself what real knowledge does the supplier have about your product at all.