1.66 Ct. Green (Lime Green) Peridot from Tanzania

This item is a transparent 1.66 carat peridot, asscher octagon shape, with precise dimensions of 6.78 by 6.53 by 4.76 millimeters, clarity graded as slightly included at eye level, medium color intensity, and an excellent polish. The stone is natural, without any enhancement, and is sourced from Tanzania, a region known for producing peridot with vivid lime green saturation. Peridot is an olivine group mineral, with a chemical composition dominated by magnesium and iron, the Fe2 plus ion being primarily responsible for the characteristic green color. Typical gemological parameters for peridot include a refractive index in the range of approximately 1.65 to 1.69, a distinct birefringence that can reach approximately 0.036, and a Mohs hardness near six and a half to seven, factors that inform both its optical behavior and practical considerations for wear and setting. The dimensions and weight of this specimen place it in a size class that is attractive for solitaire rings or tiered accent settings, while the medium color intensity provides a balance between vividness and versatility in various metal environments.

The asscher cut executed on this peridot emphasizes step faceting and concentric geometry to create controlled light return and a hall of mirrors effect within the pavilion. The asscher style relies on parallel pavilion and crown facets, truncated corners to form the octagonal outline, and a relatively large table that permits direct assessment of color and inclusion population. In this example the pavilion depth and facet angles have been proportioned to optimize internal reflection for a gem with peridot s optical constants, taking into account its birefringence which can produce subtle doubling of facet edges when viewed off axis. The excellent polish is evident in crisp facet junctions and the absence of polish lines or surface grain, which enhances contrast and maximizes the perceived saturation of the lime green tone. Slight inclusions, visible at the loupe or eye level, are contained and do not materially disrupt the step facet pattern, rather they attest to the natural provenance and provide identifying internal characteristics useful for future appraisal and certification.

Owning this peridot is an investment in beauty and craftsmanship, the value proposition deriving from a combination of natural origin, untreated status, cut precision, and gem quality. Natural, unenhanced peridot of this size and vitality is comparatively scarce, and the asscher cut elevates the stone by requiring exacting lapidary technique to maintain symmetry, facet alignment, and pavilion depth that complement peridot s refractive behavior. For collectors and designers who appreciate technical nuance, the stone s proportions and polish provide predictable optical performance when set, while its slightly included clarity grade allows for a more affordable acquisition without sacrificing visual impact. For bespoke designs, this peridot pairs exceptionally well with darker, high contrast companion stones, and in particular a Semi Black Opal serves as a sophisticated counterpoint, the opal s dark base tone amplifying the peridot s lime green through juxtaposition, and the opal s play of color introducing dynamic chromatic interplay. Semi Black Opal is valued for its subdued body color that enhances visible play of color, its hydrated silica structure that requires protective mounting due to lower hardness relative to peridot, and its ability to function as a focal or accent element in high end jewelry.

The Natural Gemstone Company presents this peridot as a piece that rewards a technically informed owner, whether the objective is creation of a precision set engagement gem, an investment grade cabinet specimen, or a center stone for a custom ring that showcases artisanal cutting. Practical recommendations include protective settings that shield the corners, such as a well engineered bezel or a multi prong seat that follows the octagonal outline, and the use of periodic professional cleaning to preserve the polish and optical integrity. For pairing with a Semi Black Opal, consider settings that separate the stones slightly to avoid abrasion, and use mounting designs that celebrate the contrast in optical properties, the peridot s step facets against the opal s fluid play of color. For further technical data, photographs at multiple angles, or guidance on certification and custom mounting options, please contact The Natural Gemstone Company, we are prepared to provide detailed instrumentation reports, facet maps, and setting recommendations to ensure that this peridot performs as both an aesthetic investment and a durable component of fine jewelry.