Leibish Certificates and Memberships

Leibish & Co. is officially recognized by many esteemed organizations and institutions in the diamond industry. Below are some of the certifications that Leibish & Co. has received, current as of 2014. 




WFDB Mark - A Sign of Confidence


The World Federation of Diamond Bourses has very high demands of its members. It demands honesty and integrity in all the fields of the trade - the result is that our work is ethical in every possible way.

Among these principles, Leibish & Co. promises never to trade in conflict diamonds, to always describe diamonds accurately and fairly, and to refrain from unethical conduct against our clients.


We do our maximum to work in accordance with the expectations of the WFDB, and to serve you, our clients, to our greatest ability.


WFDB Mark Number: IDE2895

First Name: Leibish

Sur Name: Polnauer



WFDB Mark     





Natural Color Diamond Association - NCDIA



NCDIA - "Natural Color Diamond Association" is the world's leading Fancy Color Diamond association, and its members are known for their expertise in natural fancy color diamonds. The letter below certifies that Fancy owned by Leibish Polnauer, is a member in good standing of NCDIA




NCDIA Leibish Certificate of Membership 2014





NCDIA Member





Stephen C. Hofer - Official Recommendation




We would like to share with you a letter of recommendation given to Leibish & Co. by Mr. Stephen C. Hofer.


Mr. Hofer is one of the world's leading, respected authorities on fancy color diamonds.


Leibish Polnauer and Mr. Stephen C. Hofer


Photo taken during a visit of Mr. Stephen C. Hofer to the Leibish & Co. booth at the Basel Show, Switzerland 2009.

Left: Mr. Leibish Polnauer, Leibish & Co. president
Middle: Mr. Stephen C. Hofer
Right: Mr. Shmulik Polnauer - Leibish & Co. GIA GG
Mr. Hofer is the author of the fancy color diamond books "FOREVER BRILIANT" and "COLLECTING AND CLASSIFYING COLOURED DIAMONDS."
Mr. Hofer is respected in the industry for his broad knowledge and expertise in fancy color diamonds, and for the special reports he issues on unique and rare diamonds.


Click to read page 1      

Click to read page 2






Israel Diamond Exchange Membership




The Israel Diamond Exchange is one of the leading diamond exchanges in the world. The letter below certifies that Leibish & Co., owned by Leibish Polnauer, has been a member in good standing of the Israel Diamond Exchange for many years.



Israel Diamond Exchange Membership