4.00 Ct. Green Tourmaline from Brazil

At The Natural Gemstone Company we are pleased to present a remarkable example of classic tourmaline beauty, a transparent oval green tourmaline weighing 4.00 carats, with dimensions of 10.05 x 8.19 x 7.41 mm. The gem is faceted in a mixed brilliant cut, combining the scintillation of a brilliant facet arrangement with the depth and windowing control of step elements. Color evaluation places this stone at medium color intensity, a range that offers both presence and versatility for jewelry settings. Clarity has been assessed as very slightly included at eye level, which for most practical purposes means the gem reads as eye clean, and the polish has been graded as excellent, delivering a crisp and mirror like finish across all facets. This tourmaline is heat treated, a standard and stable enhancement applied to many tourmalines to improve color uniformity and tone, and it comes from Brazil, a country renowned for producing a wide spectrum of high quality tourmalines that are sought by collectors and makers alike.

Understanding why this particular example is valuable to an educated buyer starts with the balance of weight, cut, clarity, and finish. At 4.00 carats this oval is substantial enough to occupy a prominent position in rings and pendants while retaining pleasing proportions for comfortable wear. The mixed brilliant cut is intentionally selected to maximize both light return and color presentation. Brilliant facet arrays on the crown create lively scintillation, while selective step facets in the pavilion provide depth and controlled face up color, minimizing windowing and ensuring broad flashes of brightness from many viewing angles. With a clarity grade described as very slightly included when evaluated at eye level, any internal characteristics are minimal and typically only detectable under magnification, not by unaided vision. For buyers who prioritize eye cleanliness and optical performance, this combination of a thoughtful faceting strategy and a high clarity presentation represents a strong value proposition.

Color and origin are central to the tourmaline story, and this gem demonstrates why medium intensity green tourmaline is desirable. The green hue is clean and transparent, with saturation sufficient to register confidently in natural light without appearing overly dark in subdued settings. This balance makes the stone adaptable for a range of designs, from classic solitaire mounts to more elaborate halo or mixed metal settings where the green will harmonize rather than dominate. Brazil is a historic source of fine tourmalines, and while locality alone does not determine quality, Brazilian material has long been prized for its clarity and color range, and collectors recognize the provenance as a positive attribute when disclosed. Heat treatment is disclosed openly because we believe in full transparency. Heat treatment in tourmaline is a common practice used to stabilize and improve color, and when properly performed it produces a stable result that does not require special precautions beyond normal care for colored gemstones. The excellent polish further enhances the stone, producing crisp facet junctions and clean reflections which allow the green to appear lively from multiple orientations.

When viewed in hand and under jewelry design considerations this tourmaline presents as flawless to the unaided eye, a perception driven by its eye level clarity and superior facet finish. The mixed brilliant cut acts on the gemological characteristics of tourmaline to deliver consistent brilliance, apparent symmetry, and a pleasing balance between flash and color saturation. From crown to pavilion every facet contributes to an optical performance that reads as pristine when set, and the dimensions of 10.05 x 8.19 x 7.41 mm translate to a well proportioned oval that sits securely in a bezel or prong setting without appearing top heavy. For buyers seeking a gemstone that combines collector worthy properties with practical suitability for fine jewelry, this 4.00 carat green tourmaline from Brazil represents an intelligent purchase, especially because The Natural Gemstone Company provides full disclosure of treatment and origin. We welcome requests for additional detailed photography, video, and certification upon purchase, and our gemology team is available to discuss mounting recommendations that will optimize durability and visual impact.