Various loose diamonds are available from many diamond dealers online but it is important to ensure you know exactly what you are getting when selecting any loose diamonds online.
Loose diamonds are undoubtedly the best way of buying diamonds as it is possible to have them properly appraised. Diamonds that are set in jewelery may have hidden flaws and inclusions not seen but covered up and which will lower the value of the diamond.
Getting a loose diamond properly appraised or having one that comes with a certificate of appraisal or grading from a gemological laboratory is most important in finding out what the diamond is truly worth.
Possibly one can get a variety of loose diamonds from a physical auction. One that you actually attend such as Sotheby’s. Such diamonds would usually come with a certificate from a gem lab anyway.
Online auctions are a different matter. It is really not possible to inspect the diamonds and although it might be stated they are of a certain grade, there is no guarantee of the quality of a diamond sold this way. If a genuine certificate is stated to accompany any diamond so sold then ask for a copy of the certificate or for one to be posted so it can be read.
It pays to know the value of diamonds and the price of diamonds. Check out the information in this site about the qualities of diamonds such as the 4cs grading, charts etc.
There is a heap of information about diamonds here and how you can buy diamonds and also sell them.
A bit of due diligence and common sense goes a long way when it comes to various loose diamonds!