Lab-Grown Diamond Necklaces & Pendants Editorial note: This article is a practical buying framework for lab-grown diamond necklaces and pendants. Product availability, pricing, and retailer policies can change, so verify current details with the retailer and grading laboratory before ordering. Use the stone report and the finished jewelry specifications together when comparing lab-grown necklaces and pendants. What should you check first in a lab-grown diamond necklace? Answer: Start with the grading report and identify whether the stone is laboratory-grown, its