Why are some diamond earrings not sold with grading reports? How to ensure the quality in this case?

@craigbaker The reasons why the vendors do not provide grading reports for diamond earrings can be broken down into these:

• The carat weight of the center stone is so small and does not reach the lower limit that grading laboratories require to offer a grading service. For example, GIA generally grades diamonds weighing at least 0.15 carats. (Here's their service page for your reference: https://www.gia.edu/gem-lab-service/diamond-grading)
• It's simply not worth the investment in grading reports for diamonds on the earrings, considering a grading report can cost a minimum of several dozens of dollars while the price of these small earrings is a mere $100-200.⚖️
• The vendors may try to deceive you, and the "diamonds" may be just simulants with similar looks.

The simple way for regular consumers to purchase items without reports with confidence is to buy from reputable vendors like Shane Co., James Allen, Blue Nile, DiamondStuds.com, etc. Alternatively, turning your eyes to lab-grown diamond earrings and diamond simulant earrings can broaden your choice and make the best value for your money -- more considerable carat weight -- and/or strong fire effect (if you opt for CZ earrings).