Diamond Certification

What is Diamond Certification?

     At Bowtie Lab Diamonds, each of our certified diamonds is accompanied by an official grading report from one of the world’s most trusted gemological laboratories.

 

                                         

 

Gemological Institute of America                     International Gemological Institute

 

     These certifications represent accuracy, integrity, and global recognition — the same standards upheld by heritage maisons and reflected in every diamond at Bowtie Lab Diamonds.

 

GIA Certified Diamonds

 

     GIA is regarded as the gold standard in diamond grading. Founded in 1931, GIA developed the universally recognized 4Cs.

     Cut, Color, Clarity, and Carat Weight — setting the benchmark for quality and transparency.

A GIA-certified diamond ensures:

  • Uncompromising accuracy and independent evaluation
  • Highest level of credibility in the global market
  • Exceptional long-term value for collectors and investors

     When you choose GIA, you’re choosing the same institution trusted by the world’s leading luxury jewelers.

 

IGI Certified Diamonds

 

      IGI is the world’s largest independent gemological laboratory, known for its advanced precision and expertise, particularly in lab-grown diamonds.

An IGI-certified diamond offers:

  • Consistent grading recognized worldwide
  • Detailed origin disclosure and verification of growth method
  • Outstanding balance of speed, accuracy, and value

     IGI certifications are highly respected among modern fine jewelers for their reliability and clear, comprehensive reports.

 

Non-Certified Diamonds

Not every diamond requires certification to shine.

      We also offer a curated selection of non-certified stones, carefully handpicked by our in-house gem specialists for their exceptional beauty, cut quality, and brilliance.

     These diamonds are often priced more accessibly while maintaining the same high visual standards. Each is inspected and verified by our team to ensure that what you see and what you wear meets the same aesthetic excellence expected from Bowtie Lab Diamonds.

 

Certification verifies the data.
Our curation guarantees the experience.