Third-generation diamond manufacturer bringing jewelry visions to life with speed, precision & trust.
We are a third-generation diamond manufacturer with deep roots in the global jewelry trade. For decades, our family specialized in supplying loose and certified diamonds to jewelers, wholesalers, and retailers around the world
Until 2023, our primary business was sourcing and cutting high-quality diamonds, but through close relationships with our clients, we discovered a common challenge: many jewelers faced delays, inconsistencies, and hidden costs when turning loose stones into finished jewelry.
To solve this, we expanded our expertise and launched Custom King NYC — a dedicated platform for custom jewelry manufacturing, CAD design, and complete production services. By combining our diamond heritage with modern technology, we help jewelers bring their visions to life with speed, precision, and transparency
Today, Custom King NYC operates globally with offices in New York (USA), Queensland (Australia), Ontario (Canada), and Surat (India). This international presence allows us to provide:
Our mission is simple: to become a reliable manufacturing partner for jewelers worldwide. Whether you are a retailer, wholesaler, or independent designer, we ensure that your orders are delivered with quality, speed, and trust.