10.09 Ct. Greenish Blue Aquamarine from Brazil

This listing presents a single, transparent aquamarine of 10.09 carats, emerald cut, with exact dimensions of 16.13 x 12.16 x 7.03 millimeters. The gem displays a pleasing greenish blue hue with medium color intensity, and an excellent polish that enhances its step cut geometry and table reflections. Clarity grade is very very slightly included, evaluated at eye level, which for an aquamarine of this size and cut means minor inclusions that do not interrupt the gem s transparency or diminish its visual appeal when set. There has been no enhancement applied to this stone, the crystal is natural and untreated, and the documented origin is Brazil, a primary source of high quality aquamarine. The clean pavilion and well proportioned table ensure strong light return for a step cut, while the classic emerald cut shape preserves color depth and offers a sophisticated, architectural appearance suitable for upscale jewelry designs.

From the perspective of an informed buyer, this aquamarine offers a compelling combination of factors that make it an investment grade choice as well as a beautiful center stone for bespoke jewelry. Its weight at just over ten carats places it in a size category that is relatively rare for high clarity, untreated aquamarine material, particularly material that retains such a balanced medium color intensity. The greenish blue hue indicates the presence of iron within the beryl structure, a chromophore responsible for the attractive coastal blue tones sought after in top aquamarine pieces. The absence of enhancements increases the gem s provenance value, because heat treatment and other enhancements are common in the trade. The excellent polish and precise emerald cut demonstrate skilled lapidary work, optimizing face up color and minimizing windowing, which enhances perceived saturation and contributes to visual impact in larger face up sizes. For collectors and designers who prioritize natural origin, clarity, and cut quality, this aquamarine represents a rare combination of attributes that justify a discerning purchase.

This stone is exceptionally versatile when it comes to custom settings, and can be realized in a wide array of design directions depending on wearer preference and intended use. As a ring center the emerald cut shape is ideal for classic solitaire settings that emphasize geometry and clean lines, a four prong mounting with V shaped corner prongs provides security while showcasing the step cut table. For clients seeking maximum brilliance contrast, a halo of melee diamonds in a pavé or micro pavé setting will accentuate the aquamarine s color, with white diamonds creating a crisp contrast, and champagne or cognac diamonds adding warm complementary tones. Bezel settings offer low profile security and are recommended for active wearers or men s signet style rings, and an east west orientation in an open gallery design produces a contemporary fashion statement. For pendants and earrings, matched pairs or a single drop pendant allow the stone s elongated shape to read elegantly, and a hidden bale or simple bezel will maintain a modern aesthetic. Three stone designs can pair the aquamarine with tapered baguettes or trillion cut side stones to preserve the step cut language, while cocktail rings can embrace prismatic light play with open shoulders and knife edge bands. The stone also adapts well to mixed metal treatments, with 18 karat yellow gold warming the greenish blue, and platinum or 18 karat white gold offering a cooler, more architectural presentation. When planning a bespoke mount, consideration should be given to the gem s girdle thickness and pavilion depth so that the setting protects the corners, supports the pavilion without excessive pressure, and secures the gem with minimal metal intrusion on the table face.

Practical considerations for setting, care, and commissioning are important to maximize longevity and beauty. Aquamarine, as a beryl species, has a Mohs hardness of approximately 7.5 to 8, which provides good durability for daily wear, yet attention should be paid to corner protection with the emerald cut, as corners can be more vulnerable to impact. Ultrasonic cleaning is generally acceptable for clean, untreated aquamarine but professional advice should be followed if the final setting includes materials that could be sensitive to vibration. Routine cleaning with warm soapy water and a soft brush will maintain luster, and regular checks of prong tension or bezel integrity will prevent accidental loss. At The Natural Gemstone Company we provide condition assessments and mounting recommendations based on the finished design, and can supply detailed measurements, high resolution imagery, and CAD renders for approval prior to fabrication. We can also arrange independent gemological reports where desired for insurance and resale documentation, and we advise appraisal updates once the stone is set in precious metal.

If you are considering this 10.09 carat emerald cut greenish blue aquamarine for a bespoke commission, our design specialists at The Natural Gemstone Company can guide you through metal choices, setting styles, and side stone combinations that complement the stone s clarity, color and cut. We welcome inquiries about custom ring prototypes, pendant mockups, convertible settings that adapt from day to evening wear, and options to include engraving or textured finishes to personalize the piece. Please contact us to request CAD images, a video showing the stone from multiple angles, or to schedule an appointment with our design team who will provide tailored recommendations, estimated timelines, and budget conscious options for both fine and high jewelry settings.