7.49 Ct. Tourmaline from Mozambique

This transparent 7.49 carat cushion shaped watermelon tourmaline, measuring 12.73 by 9.98 by 7.16 millimeters, exhibits the kind of optical performance that appeals to informed collectors and jewelers, it is cut in a mixed brilliant style that combines a brilliant facet arrangement on the crown with stepped pavilion facets, this combination maximizes light return while preserving the depth and color zoning that define watermelon tourmalines, tourmaline has a refractive index approximately 1.624 to 1.644 and a moderate birefringence in the range of about 0.018 to 0.040, these optical properties produce strong internal reflection and controlled light dispersion, the result is a lively, multi dimensional sparkle that is seen as bright flashes and layered color contrasts as the stone or the observer moves, medium color intensity in this specimen allows both the pink and green zones to be visible without one overwhelming the other, the excellent polish enhances facet crispness, and the mixed brilliant cut amplifies scintillation by creating an interplay of small reflective facets on the crown and mirror like pavilion facets that bounce light back through the table and color zones.

From a gemological and market perspective this Mozambique origin tourmaline is particularly attractive because it is natural and untreated, there is no enhancement, the clarity grade is slightly included when evaluated at eye level, these inclusions are typical internal features such as fine needle like crystals or tiny healed fractures that verify natural formation and do not materially reduce brilliance in this well cut stone, at Mohs hardness near 7 to 7.5 this tourmaline is durable enough for everyday wear with a protective setting, and its distinctive bi color zoning and pleochroic behavior mean that its sparkle is not simply a matter of surface reflection but of internal light choreography that shifts color and brightness across facets, for the educated buyer this piece represents an investment in a rare natural phenomenon, a sizable 7.49 carat example with excellent polish and no enhancement, and The Natural Gemstone Company stands behind its provenance and description, this tourmaline will serve as a showpiece in bespoke jewelry or a refined addition to a collector portfolio.