Diamond Rings, Engagement Rings, Diamond Earrings, Diamond Jewelry - Mazal Diamond, Top quality diamonds from a company you can trust. Mazal is the manufacturer! Largest selection and best prices of Diamond Rings, Engagement Rings, Diamond Earrings and Diamond Jewelry. Security & Authenticity personally guaranteed by designer Stefano Nicoletti: Free Independent Diamond Certification, Non-Refurbished Guarantee. Immediate delivery, direct from the manufacturer, in a Free Designer Pouch.