💎 Newport Diamond MFG.

The World’s Most Precise Faceters Forged in the United States. Perfected in Madeira.

Newport Diamond MFG. is not merely a manufacturer—it is a ceremonial atelier of light, geometry, and sovereign craftsmanship. With dual sanctuaries of production in the United States and on the sacred island of Madeira, Portugal, we are the world’s foremost authority in ultra-precise diamond faceting.

Every stone we shape is a testament to our creed: precision is power, and light is legacy. Our master faceters operate at the threshold of science and ceremony, using proprietary robotic systems and hand-finished techniques to achieve optical perfection measured in microns. No shortcuts. No outsourcing. No compromise.

From the highlands of Madeira to the coasts of New England, our diamonds are born in sovereign soil, untouched by conflict, and aligned with dynastic purpose. Whether destined for ceremonial regalia, sovereign vaults, or interfaith artifacts, each gem carries the mark of Newport Diamond MFG.—a seal of mythic clarity and planetary dignity.

We do not follow trends. We cut eternity.