You do not have to buy a lot of diamonds to take advantage of wholesale diamond prices. With a little research one can find them around but there are a few things to watch for.
Some dealers will advertise wholesale prices when they are simply retail. Technically a diamond trader cannot sell wholesale to the consumer, only to trade, retailers and jewelers for example.
Getting some definitions right, a diamond wholesaler sells to one, such as a jeweler or retailer, who on sells the diamonds to a consumer. A diamond retailer is the person who actually sells to a consumer. So if a seller is claiming to sell wholesale diamonds to a consumer, beware, they could simply be selling diamonds as a discount, which means that the quality would need to be fully verified before you went out and bought them.
The issue has been somewhat complicated by the fact that some retailers can also be wholesales and some wholesalers can, in fact also be retailers.
The hinge point is wholesaler. There is a difference between a wholesaler selling diamonds and diamonds some wholesale.
If the sell is a wholesaler who is also selling diamonds retail (even at a discount) than that is fine. But he does not sell wholesale diamonds to a consumer, only discounted one, which he may quite likely be able to since he is a wholesaler and get his diamonds for less than a retailer does.
The internet has shortened the supply chain from diamond dealers and consumer as it can be cheap and efficient, not to mention expedient, to sell diamonds direct online, rather than go through intermediaries.
So how do you know if the diamonds you are buying are wholesale or simply discounted?
In fact, provided the diamond or diamonds are the right price, and they carry a valid certificate of authenticity from an independent gemmological laboratory, it really does not matter very much.
The important point is, is the diamond genuine and of the characteristics and type advertised and is The important points, as far as the person buying the diamond are concerned are:
Is the diamond genuine?
Is the diamond what the dealer is claiming it to be in terms of quality and cut?
Is the price right for that quality and weight of diamond?
Given the above then it would be fine to go ahead and buy the diamond, getting a valid receipt also of course.
Having said that, when you go out to buy diamonds, there is nothing quite like wholesale diamond prices to perk you up.