3.85 Ct. Blue Cabochon Aquamarine from Brazil

This translucent 3.85 carat round aquamarine from Brazil exemplifies material suited for sophisticated custom work, and it is offered by The Natural Gemstone Company. The stone measures 9.81 x 9.74 x 5.47 mm, giving a near perfect circular footprint and a substantial dome height for a cabochon. The cutting style is cabochon, with a smooth convex face and a well controlled pavilion profile, and the polish is excellent, producing a clean reflective surface across the dome. The color intensity is light, exhibiting a soft blue that is consistent with high quality Brazilian aquamarine, and the clarity grade is slightly included when evaluated at eye level, with natural internal features that provide authenticity without detracting from the gem tone. This material has been heat treated, a common and stable enhancement for aquamarine that refines the blue hue by removing greenish overtones, and the combination of translucency and treatment yields a serene, even color distribution ideal for the cabochon cut.

From a design and setting perspective the dimensions and shape make this aquamarine especially adaptable for custom jewelry. The near 10 millimeter diameter places it in a size class that reads as a clear center stone in rings and pendants, and it is also well suited for single stone earrings when paired. The cabochon dome height of 5.47 mm calls for bezel style settings or collet mounts to provide security and protection, and the smooth girdle and even outline simplify CAD modelling and hand fabrication, allowing for tight seat tolerances. Because the cut is not faceted, light interacts with the dome as soft reflected luminance rather than scintillation, so designs that emphasize gentle glow are recommended, including low profile bezels for daily wear and open back bezels when you prefer slightly enhanced light transmission. Prong settings are less conventional for cabochons, but three or four prong styles can be engineered with protective claws and seat channels if you prefer a more open aesthetic. Metal choice will significantly affect the perceived color, with white metals such as platinum and white gold reinforcing the cool blue, and yellow or rose gold introducing warm contrast that can deepen the visual presence.

For craftsmen and knowledgeable buyers who require precise technical information, this aquamarine offers reliable parameters for production. The 9.81 by 9.74 millimeter footprint allows for predictable bezel wall widths and seat depth planning, and the 5.47 millimeter thickness informs post and gallery clearance in ring settings. The excellent polish minimizes surface microabrasion during setting, and the slight inclusions indicate natural origin and can be strategically oriented to face the table or pavilion depending on the chosen mounting, ensuring any internal features are minimized in the face up presentation. Heat treatment status is permanent under normal wear and exposure, and cleaning protocols are standard for aquamarine, with care taken around any sharp knocks due to the cabochon dome. At The Natural Gemstone Company we can provide CAD ready images, exact facetless profile drawings, and mounting recommendations to ensure the cabochon seats precisely and is presented to best effect. This 3.85 carat round cabochon aquamarine delivers balanced size, secure proportions, and a soft pastel color that makes it an excellent nucleus for custom, bespoke pieces, where the craft of the setting and the interplay of metal and light will determine the final character of the finished jewel.