Royston turquoise comes from the Royston mining district near Tonopah, Nevada, and is famous for its range of color within a single stone — deep blue blending into rich green — set against a heavy golden-brown matrix. One of Nevada's classic mines, Royston still produces sought-after stone today.
The Royston district sits in central Nevada near Tonopah, a region that has produced some of America's most collectible turquoise. Royston is actually a group of claims, and it has the distinction of being one of the historic Nevada mines still worked, so fresh material continues to reach the market.
Royston's signature is color variation. A single cabochon will often shift from a vivid blue at one edge to a deep avocado or emerald green at the other, framed by a dark golden-brown to chocolate matrix. That two-tone quality, rather than a single uniform blue, is what collectors look for and what makes each Royston stone distinct.
The mine yields a broad range, from harder high-grade natural stone to softer material that is stabilized. Its bold color and strong matrix make Royston a favorite for substantial Navajo silverwork, where a large stone can show off the full blue-to-green sweep.
Royston's range also makes matching both a challenge and a pleasure: assembling a cluster or a strand of stones that share the same blue-to-green balance takes a careful eye, and a well-matched Royston set is admired for exactly that consistency. A single large Royston cabochon, by contrast, is prized for showing the full color shift in one stone, framed by its characteristic dark matrix. Because the mine still produces, it remains one of the more available classic Nevada turquoises, in a wide span of grades and prices.
Look for even cutting that makes the most of the color transition and a clean, well-set stone. As with all turquoise, treatment and maker should be disclosed; a documented Royston piece names its mine with confidence.