1.84 Ct. Tourmaline from Mozambique

Presenting a finely faceted, transparent multi color tourmaline weighing 1.84 carats, cut in a classic emerald cut shape with dimensions of 7.63 x 6.49 x 4.71 millimeters. This gem is notable for its emerald cut that showcases a broad table and elongated step facets, emphasizing both its clarity and its color zones. The clarity grade is very slightly included when evaluated at eye level, which means the stone displays exceptional transparency with only minor mineral characteristics that do not detract from the visual impact when set in jewelry. The color intensity is medium light, allowing the tourmaline to present vivid yet elegant hues that shift subtly as the stone moves. The gem has been heat treated to enhance and stabilize its color, a common and widely accepted enhancement in the trade, and it has been given an excellent polish to maximize light return. This piece is sourced from Mozambique, a region renowned for producing tourmalines with strong color and crystal clarity, and it is offered by The Natural Gemstone Company with full disclosure of origin and treatment.

Examining the proportions, the dimensions yield an approximate depth percentage of 66.7 percent, calculated from the measured depth relative to the average of the length and width. This depth is very well suited to an emerald cut, balancing face up size with good light performance. The step cut does not attempt to mimic the scintillation of a brilliant cut, rather it creates broad, mirror like flashes and a distinct play of light between the pavilion and the crown. Because the polish is excellent, the facet junctions are crisp and the tables return light cleanly, producing crisp flashes of brightness across the table and along the steps. The very slightly included clarity grade means that at normal viewing distances the gem appears clean, and under magnification the inclusions are typical of natural tourmaline, not affecting the structural integrity of the stone. For an educated buyer, these combined factors translate into a gem that is both visually appealing and technically sound for sophisticated jewelry design.

The reason this multi color tourmaline produces a sparkle and color interaction that is unique lies in the mineral structure of tourmaline itself, coupled with the geometry of the emerald cut. Tourmaline belongs to a trigonal crystal system, forming elongated prisms with vertical striations, and its crystal chemistry allows for a range of trace elements to substitute within the lattice, producing diverse colors within a single crystal. Optically, tourmaline has a refractive index that is moderate to high for colored gemstones, generally in the range of approximately 1.61 to 1.67, and it exhibits birefringence that can reach up to about 0.04. This birefringence splits light into two polarized rays that travel at slightly different speeds through the crystal, which contributes to a complexity of internal reflections. Equally important is pleochroism, a strong directional color variation in tourmaline, which causes the stone to display different hues when viewed from different angles. In a multi color specimen, these optical phenomena are amplified, so as the gem is tilted and turned, the viewer perceives shifting bands of color and flashes of light that feel dynamic and lively. The emerald cut, with its long step facets, harmonizes with these properties to create broad flashes of color and brightness, a hall of mirrors effect that is distinct from the pinpoint scintillation of brilliant cuts.

For the discerning buyer who values provenance, technical quality, and visual distinction, this 1.84 carat emerald cut multi color tourmaline represents a compelling balance of rarity and versatility. Mozambique has become a respected source for tourmaline material, yielding stones with clean crystallography and saturated tones that respond well to careful cutting. The heat treatment applied to this stone is intended to stabilize and enhance color without compromising the gem lattice, and the excellent polish ensures maximum light return and easy integration into fine jewelry settings. The combination of very slightly included clarity and the emerald cut means the gem will display large, attractive color fields when set in rings, pendants, or earrings, while maintaining a refined and sophisticated appearance ideal for collectors and connoisseurs. At The Natural Gemstone Company we document origin and treatment, and we present each stone with clear information to enable confident purchase decisions. This tourmaline is an excellent choice for buyers seeking a gem that is both scientifically and aesthetically satisfying, offering optical behavior that is uniquely engaging and a level of craftsmanship that complements its natural properties.