28.05 Ct. Aquamarine from Brazil

This listing describes one transparent greenish blue aquamarine, weighing 28.05 carat, presented in a fancy shape, with precise dimensions of 25.70 x 14.40 x 10.10 mm. The gem has been fashioned with a step cut, which emphasizes broad, linear facets and a generous table, and it exhibits a medium color intensity that balances a fresh blue with a subtle greenish undertone. Clarity is graded as very slightly included, evaluated at eye level, and the surface shows an excellent polish, producing clean, crisp facet junctions and a smooth reflective plane. The material is heat treated, a common and stable enhancement used to refine and homogenize hue, and its geological origin is Brazil, a well regarded source known for producing sizable, clean aquamarine crystals suitable for precision cutting. These technical parameters define the stone as a significant and versatile gem that is ready for high quality mounting or further design refinement.

Visually, the gem presents a luminous, yet restrained brilliance that differs from the high scintillation and dispersion associated with diamonds and certain colored gems. Aquamarine has a refractive index notably lower than diamond and typical corundum, and it produces less spectral dispersion or fire. Where a diamond’s brilliance is characterized by intense scintillation and pronounced fire, this aquamarine’s visual appeal derives from clarity, color, and the type of cut. The step cut employed here generates broad, mirror like flashes of light and long linear highlights that accentuate tone and transparency rather than rapid twinkling. Compared with more common gemstones such as blue sapphire and white topaz, this aquamarine stands out through its combination of size and clarity. Sapphires often offer deeper saturation and higher refractive index, producing strong brilliance, while topaz can show similar pale blue hues but tends to be more brittle and frequently smaller in fine specimens. This Brazilian aquamarine’s substantial dimensions and minimal eye visible inclusions make it unusually luminous for its tone, offering an even, glassy glow that is particularly well suited to designs where broad light reflections are desired.

From a gemological and practical perspective, this aquamarine combines robust wearability with exceptional visual presence. Aquamarine ranks between 7.5 and 8 on the Mohs hardness scale, providing good resistance to daily wear when appropriately set, and the excellent polish further supports surface durability by reducing microabrasions. The step cut’s straight lines and truncated facets work well in protective settings that reduce the likelihood of edge chipping, and the gem’s generous length and depth allow for a range of mounting options, including solitaire pendants and substantial ring designs that emphasize the stone’s length. The heat treatment noted in the description is a stable, widely accepted procedure that improves color uniformity and reduces greenish components to reveal a clearer blue, while preserving the gem’s integrity. The clarity grade, described as very slightly included at eye level, assures that the stone will read clean in most settings, and the medium color intensity delivers a balance that translates well under both natural and artificial light, maintaining presence without overpowering the design.

Provenance and accurate specification matter when assessing a larger colored gemstone, and this aquamarine is presented with full technical detail to support evaluation and design planning. Origin from Brazil is consistent with production of fine, large aquamarine crystals, which frequently yield material well suited to step cutting and precision polish, and The Natural Gemstone Company provides this information to facilitate informed selection and responsible acquisition. Compared with more common gems, this aquamarine’s distinguishing characteristics are its scale, its transparency, and its step cut induced architecture of light, attributes that produce elegant, broad flashes in lieu of high dispersion. For projects requiring a stone with refined, architectural light behavior, stable color from heat treatment, and a minimal inclusion profile at eye level, this aquamarine represents a technically sound and visually compelling option. Please contact The Natural Gemstone Company for further technical documentation, additional imagery, or to discuss setting recommendations and custom design options.