2.62 Ct.Tw.Total Carat Weight Violetish Blue Tanzanite Pair from Tanzania

This matching pair of round violetish blue tanzanites presents a technically refined option for discerning buyers, each calibrated for face up color harmony and optical performance, The Natural Gemstone Company. The stones weigh 1.24 carats and 1.38 carats respectively, and exhibit diameters of 6.43 millimeters and an average of 6.585 millimeters based on the listed dimensions of 6.55 by 6.62 millimeters, with corresponding crown to pavilion dimensions of 4.53 millimeters and 4.51 millimeters. When expressed as depth ratios the first stone measures approximately 70.4 percent depth, and the second approximately 68.5 percent depth. These proportions indicate a deliberate cutter decision to favor deep pavilion geometry to enhance face up saturation and color persistence, while retaining controlled light return through a mixed brilliant facet schema. The mixed brilliant cut employed combines a brilliant crown facet arrangement to maximize scintillation, with a more complex pavilion configuration to concentrate color, resulting in intense color intensity and an excellent polish across facet junctions, planes and girdle execution. Clarity is graded as very very slightly included evaluated at eye level, offering a visually clean appearance for use in fine paired settings such as matched stud earrings.

From a faceting and material science perspective these tanzanites demonstrate workmanship aligned with precision gem cutting standards. The mixed brilliant approach used here integrates strategic pavilion angles and modified star and kite facets on the crown to balance brilliance, fire and color. Given tanzanite optical constants and strong pleochroism, the cutters optimized orientation to present the violetish blue axis to the viewer, minimizing the brownish or greenish directions that can otherwise alter perceived hue. The excellent polish denotes that facet planes were finished to high gloss without retention of polish lines, enabling maximum internal reflection and contrast. Symmetry control is evident in the even girdle outline and matched crown heights, which contribute to uniform light behavior across the pair. The very very slightly included clarity grade indicates that inclusions are minute and not visible to the unaided eye at normal viewing distances, preserving transparency and window free appearance. Enhancement has been performed by controlled heat treatment, a stable and industry accepted process applied to tanzanite to transform and stabilize the blue violet chromophores, and this treatment is fully disclosed by The Natural Gemstone Company.

Ethical provenance and supply chain integrity are integral to the acquisition and offering of these Tanzanian tanzanites by The Natural Gemstone Company. The material originates from licensed Tanzanian sources, and procurement follows a documented chain of custody from mine to market, with supplier due diligence checks, supplier codes of conduct, and periodic independent audits in place to verify legal compliance and responsible practices. Purchasing protocols prioritize engagement with organized artisanal cooperatives and established mining operators who operate under national regulatory frameworks, and where appropriate we support programs that deliver training in best practice mining methods, occupational safety, and environmental management including progressive site rehabilitation. Financial transparency is maintained through traceable transactions and pricing models that aim to return fair compensation to miners and intermediaries, and premiums from selected consignments are allocated to community development initiatives such as primary health services and education where miners identify need. All material is certified as conflict free, and child labor is explicitly prohibited in our supply chain, with corrective action steps stipulated in supplier agreements. For technical buyers seeking verification, The Natural Gemstone Company can supply detailed documentation on origin, treatment disclosure, third party audit summaries, and gemmological reports upon request, enabling procurement decisions grounded in both optical and ethical assurance.