11.37 Ct. Cabochon Amethyst from Brazil

One beautiful transparent 11.37 carat oval shape purple amethyst is presented by The Natural Gemstone Company, with dimensions of 18.07 by 12.95 by 6.61 millimeters, cut as a classic cabochon, and graded as very slightly included when evaluated at eye level. The stone exhibits vivid color intensity and an excellent polish, and has been heat treated to enhance and stabilize its purple tone. Origin is Brazil, a source renowned for producing some of the world most desirable amethysts, and this piece reflects that heritage through its saturated hue and even color distribution. For collectors and designers who value both aesthetic quality and transparent provenance, this specimen combines a pleasing weight and substantial surface area with a smooth domed profile that emphasizes rich color without sacrificing clarity. The cabochon treatment is executed with professional precision, producing a reflective dome that is free of cutting marks, and that presents an elegant, classical appearance suited to refined jewelry settings.

Color is the principal driver of value in amethyst, and this stone displays the deep, vivid purple saturation that experienced buyers seek, with a balance of tone and saturation that reads as pure purple with lively internal depth. Brazilian amethysts are often prized for their strong, cool to neutral purple hues, and this example typifies those characteristics with a uniform distribution that minimizes unattractive zoning. The cabochon cut intentionally maximizes color intensity and creates a visual depth that faceted cuts approach differently, and for stones of this size the domed surface allows light to play across the body color, producing a luxurious visual weight. An excellent polish enhances light return and surface luster, and contributes materially to perceived value because polish quality affects both apparent color depth and the tactile experience when the stone is handled. For applications such as a statement ring, a pendant, or a bespoke brooch, the dimensions and weight make this amethyst a versatile choice, offering presence while remaining practical for secure bezel or prong settings that respect the cabochon profile.

Clarity is described as very slightly included when evaluated at eye level, a designation that means any internal characteristics are minor and do not materially detract from transparency or visual appeal to a typical unaided observer. From a gemological standpoint, very slight inclusions often remain undetectable without magnification or careful scrutiny, and they can serve as natural fingerprints that attest to the stone natural origin, as opposed to synthetic material. The clarity grade supports strong light transmission and consistent color saturation, and combined with the transparent nature of the specimen, it yields a bright, saturated appearance. Heat treatment is disclosed, and it is a common and stable enhancement for amethyst that has been practiced responsibly within the trade to intensify or even out purple tones and to remove brownish or grey modifiers. Properly executed heat treatment does not compromise durability, and it is fully acceptable within the responsible market when documented. The Natural Gemstone Company is transparent about treatments and origin, and we emphasize that documented enhancement is standard practice to achieve the most attractive color in many natural amethysts from Brazil.

For the educated buyer assessing both aesthetic and investment attributes, this 11.37 carat Brazilian amethyst presents a compelling proposition, because larger clean pieces with vivid saturation are less commonly available, and they command attention in fine jewelry applications. The cabochon format increases versatility for designers seeking a smooth domed centerpiece that reads as bold yet refined, and the dimensions allow for substantial metal work around the stone, enhancing long term wearability and security. From a value perspective, provenance, clarity, treatment disclosure, and cutting quality combine to establish marketability, and The Natural Gemstone Company provides supporting information to assist appraisal and listing. We recommend settings that protect the dome such as a bezel or a secure prong system with a protective rim, and pairing with warm or neutral metals to accentuate the purple while preserving the gem visual depth. For further technical documentation, high resolution imagery, or consultation on mounting and insurance grade certification, The Natural Gemstone Company is available to provide assistance and to furnish detailed paperwork, because transparency and scientific rigor are central to our service philosophy.