Not cubic zirconia. One of the oldest minerals on Earth. With fire that rivals diamond.
Zircon is a natural mineral — one of the oldest on Earth, with crystals dated to 4.4 billion years. Its dispersion and refractive index rival diamond's, producing intense fire and brilliance. It is entirely unrelated to cubic zirconia, the synthetic simulant that borrowed part of its name.
Zircon appears in the oldest mineral records on Earth. Ancient gem traders in Sri Lanka knew it as hyacinth, and it was traded along medieval spice routes as a talisman against plague and insomnia. Victorian jewellers used it extensively in mourning jewellery for its dark, near-black varieties. The blue stones we prize today are typically heat-treated from brown rough — a process discovered in the 20th century that opened a new chapter for the mineral.
Zircon offers extraordinary optical performance at a fraction of the cost of sapphire. For a house that prizes stone character over stone prestige, this is significant. The intense blue of a fine Cambodian zircon rivals any sapphire at face value. Its slightly lower hardness demands a protective setting approach, which produces interesting prong architecture.
Blue zircon is the most commercially significant variety; the finest stones show a vivid electric blue with strong fire. Avoid stones with visible wear on facet edges — a sign of its relative fragility in wear. Cambodian (Ratanakiri) stones are the benchmark for blue. Colourless zircon, with diamond-like dispersion, is also compelling in the right setting.
From the Métamorphism collection
The most interesting gems are often the least famous
I source stones individually and can discuss what's currently available. Every piece is designed around the specific gem.
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