anchor:  The National Diamond Centres in Netanya.09-862 4770) as well as Jerusalem.02-673 3770) will pick you up from your hotel and give you a free tour of the workshops, where they will offer a wide choice of goods to select from and expert advice on what you may want to buy.
positive: Diamond specialists will give you advice and a free tour of the workshops that work with diamond.
negative: You will not get any help if you decide to buy diamonds in Netanya or Jerusalem.