Precision Gem Grading Lab offers the following grading and appraisal services to the trade and consumers. Services are available by appointment only. Please call PGGL at 215.774.9406 to schedule an appointment.

Diamond Grading Certificate (Light Behavior & Clarity Plot available as add-on services)
ImaGem Light Behavior Certificate
ImaGem-Secure Registration Certificate
Videos of Diamonds, Gemstones & Jewelry
Diamond Jewelry Reports (Light Behavior Analysis available as add-on)
Consultation Service (for pre-purchase, quality assurance, guidance etc.)

Custom Grading Services
Besides the services mentioned above, PGGL offers custom services to trade. Call or email us to discuss your special needs and we can customize a diamond grading service/certificate to match your requirements. Minimum volume may be required. Volume discounts are available.