At CGL, under the leadership of Amnon (Edmond) Amouyal, we know that the international diamond business is fast-moving and dynamic, and that quick turnarounds, high quality grading and superior levels of service are critical.
That's why we offer several very important advantages to members of the Israel Diamond Exchange (IDE), as well as members of other diamond bourses around the world and the wider public:

• Fast, thorough, exact and professional grading services
• Inedpendent, third-party grading. We guarantee the absolute objectivity of our grading results by using a double coding system: one set of codes is given to the owner, while the other follows the diamond in the lab. Strict anonymity guarantees strict objectivity. Our professional graders do not have access to the names of people submitting diamonds for grading
• Our graders are the most professional in the diamond business, with great experience and sharp eye for detail and committed to impartiality and using state-of-the-art equipment while working to CGL's independent global diamond grading standards
• Adherence to the strictest levels of CGL international diamond grading standard nomenclature
• We provide certificates for natural diamonds, jewelry and colored gemstones
• Our location in the lobby of the Yahalom (Diamond) Tower in the Israel Diamond Exchange offers clients, whether traders or manufacturers, total convenience
• We are open during the diamond exchange’s trading hours and just a few steps away from the other buildings of the diamond exchange.

We ensure that our grading professionals are kept up-to-date on the latest developments and innovations.
CGL also offers advanced consulting services, based on our decades of service at the heart of the Israeli and global diamond business, for the improvement of existing polished diamonds as well as for the marking and designing of rough stones.
Diamantaires and jewelers will find a warm welcome at CGL. At any stage of production, we are ready to advise and guide you on how to improve the diamond, gemstone or item of jewelry to make it even more prestigious and valuable.
We are also available to consumers who are looking for professional advice on which diamond to buy.
In order to strengthen our status and prestige as an important brand, as well as to increase awareness among consumers, the CGL runs advertising campaigns in the top international trade magazines as well as on leading websites. CGL also exhibits at the leading global diamond and jewelry tradeshows.