From time to time, I am asked the question. “What is the smallest certified diamond you can provide?”
Loose or set into the ring, we provide a range of diamond sizes. Most people appreciate that there is no upper limit to the size of a certified diamond. There are, however, limitations on smaller certified diamonds. But why?
There are good reasons why fewer certified diamonds circulate. Realistically, any size of diamond can be certified, but the biggest issue is one of cost.
When a large diamond is certified, the cost of certification (sending the diamond to a laboratory for a report to be produced) is a small part of the overall diamond cost. When a small diamond is certified, the certification cost is a much greater proportion of diamond price. Smaller certified diamonds (especially in better colours / clarities) often demand a premium on their typical selling price for this reason.
There is no real limit to how small a certified diamond can be. Smaller certified diamonds typically tend to be better quality stones. The cheaper option, (which is especially popular amongst mail order jewellery catalogs) includes credit card certificates with very generalized information. These perhaps provide some reassurance for clients, but realistically offer little value or reassurance compared to more detailed reports from laboratories such as GIA or IGI.