1.58 Ct. Tanzanite from Tanzania

This transparent violet tanzanite presents as a classic cushion shape, weighing 1.58 carats, with precise dimensions of 6.85 by 6.83 by 4.68 mm, resulting in an overall depth of approximately 68 percent. The stone is faceted in a mixed brilliant style, with a brilliant crown designed to maximize scintillation and a pavilion that integrates step oriented elements to enhance depth and color saturation. Facet junctions are executed with tight symmetry, and the excellent polish delivers crisp facet reflections and high light return. The clarity has been graded as eye clean at normal viewing distance, confirming that the stone is free of inclusions that would interfere with visual performance, and the transparency is notable for uniform light transmission. Color grading indicates a medium intensity violet, a balanced tone that shows both violet core hues and secondary blue flashes when rotated under white light. The tanzanite has been heat treated, the standard and stable enhancement for tanzanite, applied to optimize the violet blue spectrum typical of fine crystals from Tanzania. The documented origin is Tanzania, a provenance that remains the primary source for gem quality tanzanite.

The 1.58 carat weight is a defining attribute of this gem, and it materially affects both market value and rarity, because tanzanite above one and a half carats that combines eye clean clarity, an even medium color intensity, and high quality cutting is significantly less common than smaller pieces. Weight influences perceived presence on the finger and in designs, and in this cushion format the dimensions yield a pleasing table face up area that emphasizes color saturation without appearing dense. From an investment and rarity perspective, each additional tenth of a carat in this size range tends to command a disproportionate premium, driven by the scarcity of larger rough that can be cut to optimal proportions while retaining eye clean clarity. The combination of mixed brilliant faceting, excellent polish, and the 1.58 carat weight makes this tanzanite an exceptional candidate for fine jewelry settings that benefit from both visual impact and enduring value. For buyers seeking technical excellence and documented origin, The Natural Gemstone Company presents this piece as a precise, well proportioned example of high quality Tanzanian tanzanite, suitable for bespoke commissions or as a standout inventory item.