: Always request a grading report from a reputable lab like the Gemological Institute of America (GIA) or IGI. This is your "C" for Certificate —proof of the diamond's quality.
: Ensure the retailer has a clear, written return policy and offers warranties for cleanings and inspections. 4. Expert Resources For deeper research, these guides are highly recommended: where can you buy diamonds
: Membership warehouses like Costco offer high-quality diamonds at competitive prices with established return policies. 2. The Essential "4 Cs" : Always request a grading report from a
: The most important factor for sparkle. A poorly cut diamond will look dull even if it has high clarity. where can you buy diamonds