Costco Jewelry and other supermarkets

I found this link for a solitaire ring at Costco today.

http://www.costco.co.uk/view/p/100ct-round-brilliant-cut-diamond-solitaire-ring-platinum-839150

Always look out for a good Certificate and try to stay with GIA Gemological Institute of America.
Thar way you are assured that the Diamond is of the value.
When I get a Diamond for you and set it in a ring you will not only get your money back one day but you shoulod even have a profit. Now we are talking investment diamonds.
It never helps to over pay.
It always helps if you work with the most trusted people in the industry.