2.70 Ct. Tourmaline from Brazil

One beautiful transparent 2.70 carat emerald cut shape bi color tourmaline from Brazil, dimensions 9.76 x 6.53 x 5.10 mm, emerald cut, clarity grade very slightly included evaluated at eye level, medium light color intensity, excellent polish, no enhancement, available through The Natural Gemstone Company. The stone has a classical emerald cut geometry with large rectangular table and stepped crown and pavilion facets, facet junctions executed to tight tolerances to produce crisp facet reflections, the step faceting strategy emphasizes broad, parallel flashes and a hall of mirrors effect rather than the pinpoint scintillation of brilliant cuts, the generous table and measured pavilion depth concentrate color along planar facets which allows the bi color zoning to read clearly across the face, the very slightly included clarity at eye level indicates minimal internal interruption to light transmission, these inclusions are small and localized so light return remains efficient and the polish quality preserves sharp facet demarcation, the overall cutting and finishing prioritize even color distribution and geometric symmetry to maximize visual contrast between the two hues inherent in this bicolor specimen.

Optically this tourmaline demonstrates characteristics typical of its species yet distinct in execution, tourmaline has a vitreous luster and a refractive index generally around 1.62 to 1.64 which produces solid brilliance but lower dispersion than high fire gems such as diamond, the species shows strong pleochroism so viewing orientation alters the perceived saturation and hue, in a bi color material the emerald cut accentuates color zoning and directional pleochroism which makes the transition between colors crisp and architecturally legible, compared with single color tourmalines this stone offers greater visual complexity and directional color contrast, compared with paraiba tourmalines it lacks the neon copper driven glow but maintains a more subdued, painterly color effect, compared with rubellite tourmalines it displays higher transparency and broader facet flashes rather than deep absorption, compared with step cut aquamarine or topaz the bi color tourmaline shows more pronounced pleochroism and a warmer palette while maintaining comparable luster, because dispersion is modest the reflective quality is defined by broad, even flashes of color and clear facet reflections rather than spectral fire, the excellent polish and precise emerald cut proportions of this 2.70 carat Brazilian bi color tourmaline optimize light return and color separation, making it a sophisticated choice for collectors and connoisseurs seeking technical excellence, The Natural Gemstone Company recommends examination under multiple lighting conditions to fully appreciate the pleochroic and bi chromatic behavior.