5.88 Ct. Green Chrome Tourmaline from Mozambique

This specimen is a transparent green chrome tourmaline weighing 5.88 carats, a weight that immediately places it within a premium tier for this species. The emerald cut shape measures 11.14 x 9.17 x 6.85 mm, yielding a length to width ratio of approximately 1.21, and a depth that calculates to roughly 67.5 percent relative to the mean of length and width. Those proportions indicate a deliberately deep pavilion and a broad table plane, choices that favor controlled color saturation and an even face up presentation. The stone displays eye clean clarity when evaluated at eye level, a clarity grade that is uncommon for pieces of this size, and that allows the emerald cut step facets to communicate internal color uniformly without distracting inclusions. Origin is Mozambique, and the piece has been heat treated, a standard and stable enhancement that optimizes tone and eliminates minor color heterogeneity without compromising structural integrity.

The emerald cut is a step cutting style characterized by long linear facets that run parallel to the girdle on both the crown and pavilion. In this execution the cutter has emphasized proportional symmetry and parallelism, producing crisp facet junctions and a broad, flat table that serves as a window to the gem body. The crown facet arrangement moderates the transition from table to bezel, while the elongated pavilion facets control the return of light in broad planes, creating the hall of mirrors effect associated with high quality step cuts. Precision in pavilion angles and symmetry is evident in the stone s even color distribution, and the excellent polish enhances facet reflectivity to maximize the gem s face up brilliance. The girdle is even and well finished, and the culet area is guarded without being excessive, preserving weight while maintaining visual balance and secure setting potential.

Chromium bearing tourmalines from Mozambique are prized for their vivid green character and for the element s ability to produce saturation with clarity. This specimen shows medium color intensity, a grading that indicates a balanced combination of tone and saturation, where the green reads as lively and green rather than overly dark or washed out. The heat treatment has been applied to stabilize and refine the green, bringing forward a consistently appealing hue without introducing artificial appearance. The combination of medium intensity and eye clean clarity means that the color appears pure and evenly distributed across the emerald cut planes, rather than being obscured by internal features or excessive depth. From a gemological perspective the stone exhibits minimal pleochroism in typical observation, so the chosen faceting and orientation have been optimized to present the most desirable face up color, a critical consideration for high end jewelry applications.

At 5.88 carats this green chrome tourmaline represents a rare and collectible size for an eye clean, emerald cut example. Size in carats correlates directly with rarity in chrome tourmaline, and the fact that this example combines substantial weight with a refined emerald cut, excellent polish, and Mozambique origin elevates its status to premium. The Natural Gemstone Company presents this gem as suitable for bespoke commissions where the cutter s proportions and the gem s natural attributes will be showcased, for example in solitaire rings with substantial prongs to support the deep pavilion, in bezel settings that emphasize the stone s linear geometry, or as the centerpiece of a three stone design where the step cut s classic aesthetic can be paired with precision cut side stones. We provide full disclosure of the heat treatment and provenance, and we can supply gemological documentation on request. For collectors and connoisseurs seeking a technically refined, visually pure chrome tourmaline in a significant carat weight, this 5.88 carat emerald cut from Mozambique stands as a premium choice.