This GUILD certified Ratanakiri blue zircon from Cambodia weighs 6.14 carat and is cut in a cushion form.
Ratanakiri province, in the red-earth highlands of northeastern Cambodia, is the world’s premier source of fine blue zircon. The province’s name itself is often translated as ‘the mountain of gems,’ and its volcanic gem gravels have produced zircon of exceptional clarity and fire for decades. Cambodian blue zircon is considered the benchmark for the variety: a vivid, electric blue with a brilliance that few other colored stones can match. The gem gravels are worked by small-scale miners, and the rough is traded through nearby markets before being cut in local and international workshops. Because the best blue zircon anywhere comes from this one region, a Ratanakiri stone carries genuine geographic prestige. For buyers, a Cambodian blue zircon is both a beautiful individual gem and a piece of one of the world’s most distinctive gem localities. Blue zircon is one of the most brilliant of all colored gemstones, a natural zirconium silicate that has been prized since antiquity. Its claim to fame is dispersion — the ability to split white light into spectral flashes — which in fine material can rival that of diamond. Combined with a high refractive index, this gives blue zircon a fire and sparkle that immediately catch the eye, especially in evening light. The vivid blue color familiar in jewelry today is achieved through gentle heating of brownish rough, a traditional practice in the zircon trade for which this region’s material is particularly well suited. With a hardness of around 6 to 7.5 on the Mohs scale, zircon rewards a protective setting and sensible wear, and it rewards that care with unmatched brilliance. For designers seeking a blue stone with real presence, Cambodian blue zircon offers an identity entirely its own, distinct from sapphire, topaz, or tanzanite. Offered here is an individual loose blue zircon of blue color, presented in a cushion cut. Each loose gemstone in our inventory is one of a kind: its exact combination of origin, color, weight, and outline exists only once. The cushion silhouette gives a designer generous flexibility — it can anchor a solitaire engagement ring, sit gracefully in a pendant, or be paired with accent stones in a more elaborate composition. This particular stone has been gently heated, a traditional and fully accepted treatment in the colored gemstone trade. Heating mimics the natural conditions deep within the Earth, improving color and reducing visual distractions so the stone’s best qualities can be seen clearly. The great majority of sapphires and rubies on the world market are heated, and the practice has been documented for centuries. We state it openly here because transparency matters: a buyer should always know exactly what has, and what has not, been done to a gemstone. This stone comes with a GUILD laboratory report, available with the listing, documenting its identity and key characteristics. It belongs to our Premium Collection, a curated group of stones selected for their individual qualities. For a design brief centered on a natural blue zircon, this gemstone offers a defined and honest starting point: a documented source, a stated treatment, and a shape ready to guide a bespoke setting. The final visual effect will depend on the finished setting and lighting — yellow gold will warm the color, white gold or platinum will keep it cool and crisp. Designers can use the stated weight and outline to plan a custom ring, pendant, or another one-of-a-kind jewel that will be worn, enjoyed, and eventually passed on.
