5.86 Ct. Blue Aquamarine from Brazil

This transparent blue aquamarine from Brazil presents as a cushion shape weighing 5.86 carat, with exact dimensions of 14.08 by 11.17 by 6.08 millimeters, cut in a faceted mixed brilliant style that marries a brilliant crown to a faceted pavilion, yielding a lively visual performance. The cutter has executed a mixed brilliant approach to preserve weight while optimizing face up size, employing a moderate table and a slightly deep pavilion to enhance return of light and to promote scintillation across the cushion outline. Clarity is graded as very slightly included at eye level, which means that the stone retains strong transparency and clean appearance to the unaided eye, while minor natural inclusions are present under magnification and do not interrupt light pathways. Color intensity is light, the tone is a classic sea blue with subtle icy undertones that are highly desirable in aquamarine, and the polish is excellent with crisp facet junctions and smooth facet planes that maximize brilliance and give consistent luster across the crown. The piece has been heat treated, a stable and commonly applied enhancement that gently reduces greenish components and refines the pure blue tone without affecting structural durability, and the origin from Brazil contributes to the gemological profile that collectors and designers recognize for even tone and reliable crystal quality.

From a durability perspective this aquamarine is exceptionally well suited for daily wear, owing to the inherent material properties of beryl coupled with the quality of cutting and finishing performed by the cutter. Beryl exhibits a Mohs hardness in the range of 7.5 to 8, providing a high level of resistance to scratching under normal conditions of wear, and the stone in question displays good toughness, meaning it resists the propagation of fractures under incidental impacts. The clarity and excellent polish reduce stress concentration points, and the mixed brilliant faceting reduces the need for excessively shallow or deep proportions that can weaken girdle margins, so the stone is less prone to chipping when set properly. For high contact jewelry such as rings, a protective setting is recommended to maximize longevity, with a bezel or partial bezel providing the most protection, while well executed prong settings with secure girdle support provide a balance of exposure and safety. Heat treatment is stable and does not introduce fragility, and routine care with mild detergent and a soft brush is appropriate, while aggressive mechanical cleaners and extreme thermal shocks should be avoided, particularly because the gem contains natural growth features that are typical of very slightly included stones.

The craftsmanship behind this gem highlights attributes that appeal to knowledgeable buyers who prioritize technical excellence, and The Natural Gemstone Company stands behind the detailed quality assessment provided. The mixed brilliant cutter has maintained careful symmetry and facet orientation, which optimizes both white light return and subtle blue dispersion, producing a stone that reads larger than its carat weight while maintaining excellent optical integrity. The depth proportion is approximately forty eight percent relative to average diameter, a structural balance that supports both brightness and a pleasing profile on the finger or in a pendant, and the pavilion faceting demonstrates accurate angles that avoid light leakage common in poorly proportioned cuts. For bespoke jewelry applications the stone responds well to cool white metals that complement the icy blue color, such as platinum and white gold, and it also pairs beautifully with warm metals when a contrast is desired, yielding a modern or vintage aesthetic depending on the mounting. If you require setting recommendations, exact mounting dimensions, or high resolution images for design approval, The Natural Gemstone Company can provide measured drawings and consultation to ensure the stone is integrated into a piece that leverages its durability and optical qualities, delivering a wearable gem that performs reliably for daily use.