AG&J is one of the world's most technologically advanced gemological laboratories. For over 25 years we have specialized in the identification of diamonds, developing new, accurate and reliable methods. Our laboratory is equipped with the world's most up-to-date instruments, which are combined with partially patent pending procedures from our sophisticated gemological analysis.

Our New York, Diamond District-based lab provides:

• Technological leadership, continuous research and development

• Specialization in melee stone identification

• Identification of mounted stones

• Accurate identification of difficult cases, using state-of-the-art technology

• The world's fastest service for diamond identification, which doesn't compromise reliability