4.08 Ct. Tanzanite from Tanzania

From the blue volcanic roots of the Mererani hills to the light in a jeweler s loupe, this tanzanite has traveled a geological and human story worth savoring, and The Natural Gemstone Company is proud to present it to you. Mined in Tanzania, this transparent 4.08 carat cushion shaped tanzanite measures 10.61 by 8.37 by 6.16 millimeters, and has been fashioned with a mixed brilliant cut to balance scintillation and depth. At eye level it grades very very slightly included, a clarity that reads as clean and lively in hand, and it bears an excellent polish that lets each facet sing. Heat treated to bring forth its medium intense color intensity, this stone reflects both nature s patient formation and the artisan s careful enhancement, a single gem that carries the fingerprint of earth and the hand of the cutter.

The hue can be described as a violetish blue, a shade that lands the gem squarely in the hauntingly beautiful family that makes tanzanite so sought after. When you place it beside a classic Kashmir sapphire, its tone is a touch more violet and a touch less saturated in pure blue, offering a cooler, more mystical personality than the velvety deep blues of Kashmir. Against a Ceylon sapphire from Sri Lanka the difference is also telling, because Ceylon stones tend to favor a lighter, brighter cornflower blue, while this Tanzanian gem keeps a quietly dramatic violet undertone that deepens as the light shifts. If you consider sapphires from Madagascar and Montana, this tanzanite reads less green and more purple in comparison, a purple leaning that gives it a distinctive elegance when juxtaposed with the earthier, teal inflections sometimes seen in those localities.

The cutter s choices in this cushion mixed brilliant were guided by the stone s pleochroic nature and by the desire to present the truest visual weight for its 4.08 carats. The mixed brilliant pavilion returns light with lively flashes, while the cushion outline softens the geometry, making it wearable in an array of settings from a classic solitaire ring to an intimate pendant. The very very slightly included clarity note, assessed at eye level, means that the gem communicates purity to the naked eye, while the excellent polish ensures smooth facet junctions and superior brilliance. Heat treatment is the standard and stable enhancement for tanzanite, done to resolve natural brownish tones into the violetish blue you see, and when managed by reputable hands it is a permanent transformation under normal wear. The Natural Gemstone Company oversees each step in this progression from rough to finished stone, ensuring that ethical sourcing and meticulous cutting result in a gem you can both admire and trust.

Imagine this tanzanite set in a slender white gold band where its violet whispers become crystalline, or embraced by warm yellow gold where the blue notes sing against a sunlit backdrop. Compared to a Burmese spinel with a similar mass, this tanzanite reads cooler and more violet, making it an alternative for those who want the depth of classic blue stones but with a softer, more mystical temperament. Compared to aquamarines from Brazil, which often show pale sea blues and a crystalline transparency, this tanzanite offers a richer theatricality and medium intense saturation that demands attention. At 10.61 by 8.37 by 6.16 millimeters it offers presence without overpowering the hand, and it carries the provenance of Tanzania as an intrinsic part of its charm. If you would like certification details, custom mounting ideas, or guidance on how this gem compares in person to sapphires from Kashmir or Sri Lanka, The Natural Gemstone Company is ready to guide you through the final step of transforming this stone into an heirloom.