This item comes with a Jewelry Grading / Gemological Report. This report is to certify that the item described above is genuine, and has been independently examined by a certified gemological laboratory.
Also included with this diamond is a GIA (Gemological Institute of America), Gem Trade Laboratory, Diamond Grading Report. Gem Trade Laboratory is a division of GIA Enterprises, Inc., a wholly owned subsidiary of the nonprofit Gemological Institute of America, Inc. This describes the characteristics of the diamond at the time of the examination based upon 10x magnification.
When returning unique jewelry items, or items containing a 1.00 ct center diamond or larger, Costco warehouses may require additional time to verify the diamond, in which case a refund will be approved upon positive verification and as long as the item is not damaged or changed in any way (i.e. resized or reset). This process may require two to five business days.