All Lavender Creek Gems gemstones are guaranteed authentic and carefully sourced to meet our standards. While not every gemstone we offer includes an existing laboratory report, clients who would like additional documentation may choose to add a GIA Center Stone Report for the primary center gemstone. Purchasing this add-on will extend the estimated production timeline by up to six weeks, as the center stone must first be submitted to GIA for evaluation prior to beginning the design process for your piece. Please review the individual product listing carefully before purchasing, as many larger center diamonds used in our rings already include a grading report. This information will be noted directly within the item description. The exception is our 10K Maeve setting option, which does not automatically include certification unless otherwise stated. Please note: GIA reports apply to the primary center stone only. GIA does not grade or issue reports for small accent diamonds or side stones.