A True Value For Your Diamond!

People from All Over the World Send their Diamonds to the ZGL Laboratory for Grading and Analysis. Our Clients Put their Business in Our Hands andtheir Trust in Our Expertise – and We Are Extremely Careful with Both.

Reliability, Experience And Passion.

ZGL Laboratories are respected diamond grading laboratory. We have pioneered the development ofthe first scientific system used to evaluate How Well adiamond Has Been Cut. Adiamond’s Cut isthe Most Important C ofAll ofthe Four C’s. When adiamondis Well Cut It Reflects and Refracts Light tothe Maximum Degree. ZGL Has Been Acclaimed asa Worldwide Innovator Due to Our Extensive Research and Development in Determining the Cut Grade of Diamonds.

ZGL Laboratories Are Respected byDiamond Manufacturers, jewellery Retailers, and Consumers Alike for Accuracy and Consistency in Every Aspect ofdiamond Grading. One ofthe Distinguishing Factors that Separate ZGL Laboratories from Other Diamond Grading Laboratories isthatthe Mission of ZGL Laboratories isto Protect Its Consumers.

ZGL Laboratory Processes Undertaken withthe Rules of Civic Trust Organization Which Promotes Fairness in Business in Israel, Belong Exclusively to Business Conduct Fair, Credible and Transparent.

Having More Choices.

Worldwide, There Are Many Laboratories Available forDiamond Certification. ZGL Laboratories Are Widely Considered Amongst the Reliable Names inthe Grading Industry. We at ZGL have an affordable approach to conducting business to Suit Any Customer’s Needs.

Know Where You Stand, Get Your Diamond Appraised!

The Acquisition of a diamond or Precious Gemstone can ce an important expression of Love or Accomplishment that Simultaneously Represents a Major Investment. It is Essential For adiamond Proprietor to Have Certification ofthe Characteristics ofthediamondTo Obtain Confidence inthe Integrity of What They Have Acquired. An ZGL diamond Or Gemstone Certificate isa Statement Issued by One of Our Independent Gemmological Laboratories Documenting the Characteristics ofthe Stone as Determined by Our Experienced Diamond Graders atthe Time of Evaluation.