20.28 Ct. Greenish Blue Aquamarine from Brazil

This listing presents a single transparent 20.28 carat fancy shape greenish blue aquamarine, with precise dimensions of 22.60 x 16.60 x 12.90 mm, offered by The Natural Gemstone Company. The cutting style is faceted, executed as a mixed brilliant cut that combines a carefully proportioned brilliant crown with a faceted pavilion, optimized to balance color and light return. The stone is eye clean when evaluated at typical viewing distance, exhibiting a light color intensity that allows elegant translucency without appearing washed out. The polish is excellent across all facets, and the gem has been heat treated to refine its color, consistent with standard enhancement practices for aquamarines. Origin is Brazil, a source renowned for producing material that ranges from pale sea blue to deeper ocean blue, and this specimen sits in the more delicate greenish blue spectrum favored by connoisseurs who appreciate a subtle maritime hue.

From a lapidary perspective the mixed brilliant execution on this fancy shape has been calibrated to the stone dimensions to maximize optical performance, while preserving weight and maintaining a faceted anatomy that supports both brilliance and color dissemination. The crown facet arrangement follows a modified brilliant schema, with a sizeable table to present the aquamarine color, and star and kite facets that promote scintillation without sacrificing face up color. The pavilion facets are cut to yield controlled light return, preventing excessive leakage or windowing, which can mute color. Girdle thickness has been maintained within an optimal range to ensure secure setting without unnecessary weight loss, and the transitions between facet planes are crisp, indicative of precise meet point alignment and careful facet planning. The cutter balanced pavilion depth and crown height to complement the fancy outline and the substantial dimensions, resulting in a visually pleasing spread and an even distribution of light when viewed from multiple angles.

Clarity and enhancement deserve explicit technical emphasis. This gem is graded eye clean at eye level, meaning that no inclusions are apparent to a trained viewer without magnification during standard inspection. Such clarity is desirable in aquamarine of this scale, permitting the mixed brilliant design to exhibit clear internal light paths and unobstructed scintillation. The heat treatment applied is a routine, stable enhancement that reduces green undertones and enhances the blue tones inherent in Brazilian aquamarine, without compromising structural integrity when properly performed. Heat treated aquamarines from Brazil frequently display more refined blue saturation and improved overall uniformity of tone, and this stone exemplifies that outcome with a light but pleasing greenish blue hue. The excellent polish contributes to strong surface luster, minimizing light scatter and allowing facet junctions to act as efficient reflectors, a critical factor for gems of this weight meant for high end settings.

Beyond its technical merits, this aquamarine carries a heritage that will resonate with buyers who value provenance and traditional symbolism. Aquamarine has a long history as a mariner stone, carried as an amulet for safe sea travel and clarity of thought, and it has been favored in signet and dress jewelry through successive eras, including Victorian and Edwardian periods. Brazilian aquamarine in particular has been prized for its clean color and clarity, attributes that made it a frequent choice for estate pieces and for jewelers seeking gems that combine durability with refined color. As presented by The Natural Gemstone Company this specimen is suitable for a range of applications, from a statement solitaire for a ring or pendant to a central stone in a bespoke collector piece, and it will reward thoughtful cutting and mounting that respect the stone geometry and optical axes. For care, avoid sudden thermal shock and prolonged exposure to harsh chemicals, and consider professional setting that protects the girdle and pavilion. We invite interested clients to request additional high resolution images and viewing options, and to consult with our gem specialists at The Natural Gemstone Company for custom setting recommendations and certification details.