25% Off Fine Multi-Colored Diamond Collection


Located in historic Flemington, New Jersey, The Gem Vault is a family-owned custom jewelry shop. For decades, we've specialized in rare colored gemstones and diamonds, hand-made custom jewelry, and collector's quality items.  We provide custom design services and expert craftsmanship, serving Hunterdon County, NJ and the greater NYC area for over 20 years.


We specialize in creating truly unique custom jewelry using old-world techniques as well as the finest quality in natural gemstones and metals. Our award-winning team of designers and expert jewelers offer personalized design consultation services, custom fabrication, gemstone cutting/lapidary services, and much more. Learn more about our services...