Reading the Stone: A Turquoise Primer

To the uninitiated, turquoise is simply blue. To collectors, every stone is a document — its color, its matrix, and its character hinting at the mine it came from and the earth that formed it. Reading turquoise is a rabbit hole, and in New Mexico it's an especially rewarding one to fall down.

Color and matrix

Turquoise ranges from pale sky blue to deep avocado green, threaded with 'matrix' — the dark host rock left in webs and veins. Both the hue and the pattern of that matrix are prized differently by different eyes.

To a collector, no two pieces of turquoise are ever quite the same blue.

A stone with an address

Historic mines across the Southwest each produced turquoise with a recognizable look, and experienced collectors can often guess a stone's origin on sight. Many classic mines are now closed, which makes their stone all the more sought after.

Natural versus treated

Because fine natural turquoise is soft and scarce, much on the market is stabilized with resin or dyed entirely. None of that is inherently bad, but it should be disclosed — and it dramatically affects value.

Field notes

• Matrix patterns are part of a stone's identity, not a flaw.
• Stone from closed historic mines commands a premium.
• Always ask whether a stone is natural or stabilized.

Start paying attention and you may never look at turquoise casually again. In New Mexico, the stone is everywhere — and every piece is quietly telling you where in the earth it began.