2.11 Ct. Tourmaline from Mozambique

This specimen from The Natural Gemstone Company is a transparent, cushion shaped tourmaline weighing 2.11 carats, measuring 9.05 by 6.96 by 4.60 millimeters, with a yellowish green hue that reads as medium intense. The gem is fashioned with a mixed brilliant cut, combining the depth and light return of a brilliant pavilion with a stepped or modified crown, resulting in balanced visual depth and a lively face up presence. Clarity is graded as very slightly included, evaluated at eye level, which means inclusions are minimal and do not materially interrupt the stone s internal reflections. The polish is excellent, the finish is smooth and highly reflective, and no enhancement has been applied to alter color or clarity. Origin is Mozambique, and the natural provenance contributes to both the color character and the overall integrity of the stone.

Tourmaline s intrinsic crystalline structure underpins much of its optical personality, and this piece demonstrates those characteristics clearly. As a member of the tourmaline group, it crystallizes in the trigonal system and presents a complex borosilicate lattice, which influences how light moves through the gem. That lattice supports strong pleochroism in many tourmalines, so the yellowish green body color can shift subtly through different viewing directions, adding depth and a sense of motion to the color. The mineral s refractive behavior, with a relatively elevated refractive index combined with modest birefringence, produces crisp internal reflections and defined facet contrast, so light entering the gem is broken into bright flashes and well defined flashes of color. The result is a sparkle that is distinct from simpler isotropic gems, because the combination of anisotropic light behavior and clear facet architecture creates complex, layered scintillation.

The mixed brilliant cut is a key factor in how this tourmaline s sparkle is perceived, and the cutter s intention is evident here. The cushion outline offers a generous table and soft rounded corners, which maximize the surface area available for light gathering, while the brilliant style pavilion creates numerous small facets that act like mirrors, sending light back toward the viewer as scintillating points of brightness. On the crown, a balanced arrangement of facets disperses light into crisp flashes, and on the pavilion, thoughtful facet junctions produce repeated internal reflections, enhancing the overall brilliance. The very slightly included clarity grade means that there is sufficient transparency for these facet mirrors to perform without significant obstruction, and the excellent polish preserves sharp facet junctions, minimizing light leakage at the surfaces. Because this stone has not been subjected to treatment, its optical performance is the result of natural chemistry and precise cutting, and the interplay between natural color zoning, pleochroic shifts, and facet architecture yields a sparkle that is lively and multidimensional.

In practical terms the gem s proportions and visual performance make it suitable for a variety of fine jewelry applications, where its color and dynamic light behavior will be most visible. A setting that allows light to enter through the pavilion and view the crown surface directly will optimize face up brightness, and open prong or bezel designs that do not obscure the girdle will permit the pleochroic character to show. Tourmaline offers durable wear with appropriate care, and this Mozambique example combines natural origin, verified measurements, honest clarity grading, and excellent polish, providing a reliable basis for design decisions. The Natural Gemstone Company documents the gem s specifications accurately, and further information on certification and viewing options is available upon request, ensuring that the stone s structural and optical qualities are clear and well supported for professional use.