1.58 Ct. Tanzanite from Tanzania

One beautiful transparent 1.58 carat cushion shape bi color tanzanite is offered by The Natural Gemstone Company, with precise dimensions of 8.12 by 6.14 by 4.27 mm, a mixed brilliant cut, and an eye clean clarity grade as evaluated at eye level. This stone exhibits a true bi color character, showing distinct but harmonious shifts in hue within the single crystal, and a medium color intensity that reads as vivid without becoming overly dark. Such a combination of size and clear bi color zoning is uncommon, because most bi color tanzanites are either smaller specimens or display weaker zoning that is only visible under magnification. At 1.58 carats, this cushion form falls into a size range that is scarce for bi color material, making it attractive to buyers seeking a piece that stands out both for its physical presence and for its color phenomenon.

From a grading and connoisseur perspective this tanzanite has many attributes that enhance its value to an educated buyer, the mixed brilliant cut maximizes return of light and complements the cushion outline, while the excellent polish ensures crisp facet planes for optimal brilliance. The clarity designation of eye clean indicates that no inclusions are visible to the unaided eye at normal viewing distances, which increases desirability for fine jewelry applications and for collectors who prioritize clean crystals. The stone has been heat treated, a standard and widely accepted enhancement for tanzanite that stabilizes and intensifies color while preserving transparency, and the origin of Tanzania is significant because it confirms provenance from the single known primary source of tanzanite in the world, adding geological and market provenance value. Compared to similar options, this tanzanite combines a rare size for bi color specimens, inherently transparent material, a high quality cut and polish, and an eye clean clarity that together make it a rare and marketable example. Buyers seeking an investment grade or signature gemstone will appreciate the documented attributes and the assurance of origin provided by The Natural Gemstone Company.