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Sharon TeamanDesigns
Gemstone Guide

Blue Zircon

A natural stone with more fire than almost anything except diamond, in a glacial blue that photographs as though it were lit from inside.

Blue Zircon jewelry handmade by Sharon Teaman

About Blue Zircon

Zircon is a genuinely old and genuinely natural mineral, and it deserves better than the confusion with cubic zirconia, which is a wholly unrelated synthetic. Zircon crystals include the oldest dated minerals on earth, some over four billion years old.

Its optical properties are remarkable. Zircon has high dispersion — the property that produces colored fire — and pronounced double refraction, strong enough that you can often see doubled back facets through the table. That doubling is a diagnostic feature and a mark of authenticity rather than a fault.

The blue is produced by heating brown zircon from Cambodia and neighbouring deposits, a standard and stable treatment. Zircon is somewhat brittle at the facet edges despite reasonable hardness, so it wears best in settings that protect the girdle, and it should be stored so harder stones cannot knock against it.

Why Sharon works with blue zircon

Sharon pairs blue zircon with boulder opal constantly — the zircon picks up and amplifies the blue flashes in the opal in a way no other stone quite manages. It is also one of the few stones she recommends specifically for how it behaves under evening light.

Caring for blue zircon

Warm soapy water and a soft brush. Avoid ultrasonic cleaners and hard knocks, which can abrade facet edges, and keep it out of prolonged strong sunlight.

Common questions about blue zircon

Is blue zircon the same as cubic zirconia?

No, and the confusion is unfortunate. Zircon is a natural mineral that has been used in jewelry for centuries. Cubic zirconia is a man-made diamond simulant with no relationship to it beyond a similar-sounding name.

Is blue zircon treated?

Almost all blue zircon is heat treated from brown rough. The treatment is standard across the trade and the color is stable in normal wear.

Why do the facets look doubled?

Zircon is strongly doubly refractive, so light splits into two rays as it passes through. Seeing doubled back facets through the table is normal and is one way to identify a genuine zircon.

Available Now

Blue Zircon jewelry by Sharon Teaman

Each piece is one of a kind and made by hand in State College, Pennsylvania.

From the Archive

Blue Zircon pieces Sharon has made before

Sold, but a good indication of what is possible. Any of these can be a starting point for a commission.

Commissions

Commission a blue zircon piece

Tell Sharon the color, the shape or the budget you have in mind. She sources blue zircon year round and will find the right stone before a single sketch is made.