About our company. Established in 1985, SFD is a family-owned and operated business. We are committed to providing our customers with unparalleled service. At SFD, "no stone will go unturned" in our effort to satisfy our customer requirements. We pride ourselves on our highly trained team. You can rely on our specialists to deliver the most accurate diamond grading. We invite you to experience the SFD difference. SFD Trading, Inc ( "SFD" ) specializes in providing loose diamonds to diamond dealers, jewelry stores and manufacturers. We import directly from Israel, Belgium, Russia, and South Africa giving us wide access to the best selection. Whatever your needs may be, certified to non-certified diamonds in all shapes and sizes - we deliver. SFD works in tandem with the cutter, therefore we are uniquely qualified to offer you the biggest selection of diamonds at competitive prices.