17.66 Ct. Blue Aquamarine from Brazil

This exceptional 17.66 carat oval aquamarine from Brazil is a standout specimen, sized at 22.10 by 14.76 by 10.26 mm, with a mixed brilliant cut that balances large table presence with a faceted pavilion designed to maximize fire and scintillation. The gem is transparent, with a clarity grade of very very slightly included, evaluated at eye level, which for an aquamarine of this scale means virtually unobstructed light return and minimal distraction from inclusions under normal viewing conditions. Color is medium in intensity, offering a true, pleasing blue that reads well under natural and artificial light, and the excellent polish preserves crisp facet junctions and mirror like reflections. This aquamarine has been heat treated, a standard and stable enhancement for this species that refines tone and removes warmer, greenish or yellowish components while remaining permanent and widely accepted by connoisseurs and gemological laboratories.

For the educated buyer seeking a statement piece, this stone merits close consideration, The Natural Gemstone Company recommends it for high impact jewelry designs where size and clarity are paramount. At 17.66 carats the oval dimensions give an elegant elongated silhouette that sits boldly on the finger or as a pendant centerpiece, while the mixed brilliant cut ensures lively brilliance across the face of the stone, creating dynamic flashes even at modest movement. The very very slightly included clarity elevates its desirability, because large, clean aquamarines from Brazil are uncommon, and eye clean examples command a premium due to their superior transparency and light performance. Durability is favorable for everyday wear, aquamarine being a member of the beryl family with sufficient hardness for ring and pendant settings, and the excellent polish further contributes to scratch resistance and sustained luster. Collectors and designers will appreciate the combination of size, clean appearance, and balanced color intensity, making this gem suitable for bespoke settings that showcase its scale, such as four prong or halo designs that protect the girdle while allowing the table to capture maximum light. The Natural Gemstone Company stands behind the origin and treatment disclosure of this aquamarine, and we are available to advise on mounting options that preserve the stone integrity and enhance visual impact.