29.47 Ct. Green Tourmaline from Mozambique

This listing presents a single, transparent green tourmaline weighing 29.47 carat, presented in a cushion shape with dimensions of 19.82 x 17.39 x 13.55 mm, suitable for a statement jewel or a collector cabinet. The cutting style is faceted, executed as a mixed brilliant cut that balances brilliant facets with step facets to enhance both scintillation and color depth. Clarity has been graded eye clean at standard viewing distance, indicating that no inclusions are visible to the unaided eye, and the stone exhibits intense color intensity with an even saturation across the table. The polish is assessed as excellent, producing crisp facet junctions and lively light return. The stone has undergone controlled heat treatment as an enhancement, a common and stable method used to refine and stabilize hue and saturation in tourmaline, and this treatment has been fully disclosed.

The mixed brilliant cushion configuration employed here is intentional for a gemstone of this size and color profile, marrying the depth and vintage appeal of a cushion silhouette with modern faceting strategies that maximize both face up color and brilliance. The crown and pavilion receive a combination of small brilliant facets to generate scintillation, while the step style facets near the girdle preserve color saturation and depth. At 19.82 x 17.39 mm the table face presents a broad, even field of color, and the 13.55 mm depth maintains three dimensionality without becoming overly deep, which aids in both setting considerations and optical performance. The excellent polish contributes to the optical clarity, allowing the intense green to present with minimal surface diffusion, and the eye clean clarity at this carat weight is particularly notable, since larger tourmalines frequently contain visible inclusions. The result is a stone that presents as visually pure to the unaided observer, which has significant implications for both aesthetic appeal and market classification.

Provenance is a decisive factor in the valuation and desirability of colored gemstones, and this tourmaline originates from Mozambique, a jurisdiction that has become synonymous with high quality tourmaline production. Mozambique produces material from both pegmatitic and alluvial contexts, and the country is recognized for yielding large, well formed crystals with saturated hues and good clarity, characteristics that can be traced to its geological environment. For buyers and collectors, documented origin from Mozambique confers several practical advantages, it supports confident color expectations because Mozambique material often presents intense, pure green tones with favorable saturation, it aligns with market preferences for traceable sources, and it can command a measurable premium when compared with undifferentiated supply. Additionally, provenance from established Mozambican localities is often associated with recent controlled mining practices and supply chain transparency, attributes that are increasingly valued by informed purchasers and institutions.

Enhancement disclosure is an integral element of responsible representation, and this tourmaline has been heat treated, a stable and widely accepted practice in the trade to improve hue and intensify saturation when appropriate. The treatment applied to this stone is consistent with industry norms and does not degrade structural integrity, and the eye clean clarity remains unchanged by the process. In terms of use and care, tourmaline is suitable for most jewelry settings given its competent hardness and toughness, however it should be protected from sharp knocks and extreme thermal shock, and routine cleaning with mild detergents and warm water is recommended to maintain surface luster. For mounting, settings that showcase the broad table and allow light to interact with the mixed brilliant facets will best display the intense green, and a well conceived bezel or prong design can both accentuate the stone and provide mechanical protection. The Natural Gemstone Company provides detailed imagery and documentation for this specimen, and stands ready to assist with provenance information, secure packaging, and consultation on setting options to ensure the long term enjoyment and preservation of the gemstone.