1.05 Ct. Chrome Tourmaline from Tanzania

This chrome tourmaline is a transparent, oval shape stone weighing 1.05 carat, with finished dimensions of 7.80 by 6.66 by 3.43 millimeters. The cut is a mixed brilliant cut, designed to combine the depth and colour retention of step cut pavilion facets with the scintillation and light return of brilliant style crown facets. Clarity is graded as very very slightly included, evaluated at eye level, which means the stone appears clean to the unaided eye while retaining balance and vitality in its internal structure. Colour intensity is vivid, a hallmark of chrome tourmaline from Tanzania, and the polish has been assessed as excellent, yielding crisp facet junctions and smooth facet planes. There has been no enhancement applied to this gem, and its natural origin from Tanzania contributes to the overall character and desirability of the specimen. The Natural Gemstone Company provides this description to assist in a technical appraisal and informed selection.

The optical behaviour of this chrome tourmaline is influenced by its mixed brilliant cut, its vivid green chroma, and its high level of transparency. The mixed brilliant cut directs light into the pavilion and returns it through the crown in a pattern that balances broad flashes of colour with fine scintillation. The vivid green colour will show consistent saturation across the table and through the girdle when viewed face up, while the very very slightly included clarity allows clean field of vision with minimal distraction from tiny internal features. Tourmaline species can exhibit pleochroism in certain orientations, and careful cutting helps optimize the most desirable face up colour. The excellent polish enhances facet reflectivity, which increases perceived brilliance under direct illumination and preserves evenness of colour under diffuse conditions. The absence of any enhancement means the observed optical effects are intrinsic to the crystal and its cut, rather than the result of artificial modification.

Under strong natural daylight, the stone will present as a vivid and evenly saturated green, with the mixed brilliant cut producing a harmonious balance of broad colour and sparkling return. In cool daylight, subtleties in tone and secondary hues may be more apparent along the faceted edges, permitting a nuanced appreciation of the stone body colour. Under warm incandescent light, the green will retain depth while taking on a slightly warmer character, and the mixed cut will emphasize small pinpoints of scintillation that animate the surface. Modern LED lighting varies by colour temperature, and under neutral white LED sources the gem will display a true representation of its vivid green, with excellent contrast between bright flashes and darker facet planes. Under focused spot lighting the stone will exhibit pronounced scintillation, with lively white flashes from the brilliant facets against the saturated green background, which creates a sense of motion as the gem or the observer moves. In softer, diffused interiors the stone will show a more uniform glow, emphasising the evenness of its colour and the clarity that is apparent at typical viewing distances. Because this tourmaline is not enhanced, its response to light is stable and predictable, with no expectation of dramatic colour shifting that characterizes other gem species.

For practical presentation and care, the proportions and excellent polish of this oval mixed brilliant chrome tourmaline make it well suited to a variety of jewellery settings where light access is a consideration. A setting that allows light to enter from the sides and through the pavilion, combined with a secure bezel or prong system, will preserve both optical performance and wearer confidence. Routine cleaning with warm water, mild detergent, and a soft brush will maintain surface lustre, and periodic professional cleaning will help remove oils and particulates that can diminish brilliance over time. Avoid prolonged exposure to harsh chemicals and extreme heat, and remove the piece during activities that could subject the gem to hard knocks, as with any fine gemstone. Documentation and provenance are available through The Natural Gemstone Company, and this specimen represents a natural, unenhanced chrome tourmaline from Tanzania, with measurable dimensions, a precise weight of 1.05 carat, vivid colour intensity, very very slightly included clarity, and excellent polish, all of which contribute to a reliable and enduring optical performance.