Alexander Diamond Coring Established in 1997 Alexander Diamond Coring have a vast experience in the coredrilling business and is the most cost effective coredrilling company in south Africa.Alexander Diamond Coring is a hands on coredrilling company specialising in Airconditioning,plumbing,construction,stitch drilling,angulated holes and also residential work.Alexander Diamond Coring are striving for the best client relations and integtity is our motto.