I found Herzel Cohen on Alibaba.com as a distributor of diamonds and bought a stone from him. It was supposed to be certified. When i got the certification it was done by DGL. There is a DGL lab, whose website is http://dgl-labc.com. this one was a fake. the website was http://dglaboratories.com. (notice the spelling) the website is a shell with only a few navigable pages. And their email address was at a hotmail account. I tried to verify the certificate, but the link to do so only takes you to the pricing page. I had emailED Herzel about this and he got all offended saying that the lab was a real and respected lab in Israel. So I emailed the lab on their hotmail account...and guess who replied....HERZEL COHEN!!. the stone i bought from them was not the clarity listed in the certificate and no one should "certify" their own stones. Also, I was charged $30 for the certification and then when I used Paypal, Herzel told me that I need to pay more to cover his Paypal fees, which is his cost of doing business, not mine They also go under the company Shirel Diamonds, http://www.shireldiamonds.com. DO NOT BUY FROM THEM