3.92 Ct. Violetish Blue Tanzanite from Tanzania

This piece is a transparent 3.92 carat tanzanite, presented in an asscher octagon shape, with precise measurements of 8.90 x 8.80 x 5.86 mm. The asscher cut has been executed to emphasize the stone s step facets and square symmetry, producing a refined hall of mirrors effect that showcases the gem s internal clarity and color zoning. The gem displays a violetish blue hue with intense color saturation, and the polish is graded as excellent, giving crisp facet junctions and lively light return. At this size, near four carats, the stone has a substantial face up presence while remaining versatile enough for bespoke rings or collector mountings, and the slightly deep pavilion, at approximately 66.2 percent depth, helps intensify the depth of color without sacrificing brilliance.

From a gemological perspective this tanzanite is particularly attractive to the educated buyer because of its balance of color, clarity, and origin. The clarity is described as very slightly included when evaluated at eye level, indicating only minimal internal characteristics that do not materially interfere with transparency or light performance when viewed unaided. Such a clarity grade is a desirable compromise for colored gemstones, where inclusions are common and minor features are accepted in exchange for strong, natural color. The intense color intensity in this specimen is especially valuable, as tanzanite s market desirability correlates strongly with saturation and purity of violet and blue tones. Tanzanite is naturally trichroic, showing blue, violet, and brownish hues depending on orientation, and this piece exhibits strong violetish blue dominance which will be apparent in most orientations. The stone has undergone standard heat treatment, a widely accepted enhancement for tanzanite that converts brownish vanadium influenced material into the attractive blue violet tones collectors seek. Heat treatment in tanzanite is stable and permanent when properly performed, and it is disclosed here for full transparency.

The gem s origin is Tanzania, the only commercially significant source for tanzanite, specifically the Merelani region, which lends provenance and scarcity to every quality specimen. This geographic exclusivity creates long term collector value because supply is finite and concentrated, and fine crystals over three carats with intense color are relatively uncommon. The asscher cut in an octagonal outline is an ideal choice for a piece of this calibre, as the broad step facets emphasize color saturation and clarity rather than scintillation alone, producing a refined and sophisticated visual effect that flatters violetish blue tones. The excellent polish enhances facet reflectivity and gives the stone crisp, clean light interactions, while the proportions maintain a generous face up presence for dramatic yet elegant display. For wearability and preservation, tanzanite requires appropriate setting design because of its moderate hardness and perfect cleavage along certain planes, so a protective bezel or partial bezel with secure prongs is recommended for finger ring settings, while pendants and earrings can showcase the stone with less risk of impact.

At The Natural Gemstone Company we present this 3.92 carat asscher octagon tanzanite as the perfect addition to a high end gemstone collection or for a bespoke jewelry commission, combining a rare size with intense color, transparent clarity, and an artisan cut that flatters the stone s natural properties. We emphasize ethical sourcing and full disclosure, and we are happy to arrange professional gemological documentation on request to corroborate weight, measurements, clarity evaluation, color intensity, enhancement, and origin. For collectors and connoisseurs seeking a specimen with immediate immediacy and long term investment potential, this tanzanite offers a compelling combination of provenance, aesthetic quality, and expert cutting, making it a distinguished centerpiece for any elevated collection.