10.64 Ct. Cabochon Tourmaline from Mozambique

This 10.64 carat cushion shape pink tourmaline from Mozambique is presented by The Natural Gemstone Company with full transparency about its physical and gemological characteristics, offering an informed choice for the educated buyer. The stone measures 11.98 by 11.88 by 8.36 millimeters and displays a sugar loaf cut, a high domed cushion form that emphasizes color saturation and a glass like luster. The gem is transparent and evaluated as slightly included at eye level, which means trained observation will reveal small internal features that do not materially compromise the gem's overall transparency or structural integrity. Color intensity is intense, yielding a rich, saturated pink that reads as lively and vibrant in various lighting conditions, and the polish has been graded excellent, producing crisp reflective highlights across the curved facets of the sugar loaf profile. No enhancement has been applied to this tourmaline, so the color and clarity are entirely natural, an important factor for collectors and connoisseurs who prioritize untreated material.

Understanding why this specimen is desirable requires a brief review of tourmaline gemology and how the stone's attributes interact. Tourmaline belongs to a borosilicate family that commonly shows strong pleochroism, meaning the gem can present different hues from different viewing angles, and this property can enhance the perception of depth in a well cut piece. Typical refractive index values for tourmaline fall in the range of about 1.624 to 1.644, and the gem has moderate hardness around 7 to 7.5 on the Mohs scale, providing good durability for fine jewelry when set appropriately. The sugar loaf cut used here is particularly effective for richly colored stones, because the shallow pavilion and domed crown emphasize color saturation rather than light return, which suits gems where color is the primary attribute of value. The slightly included clarity grade indicates the presence of internal features such as fine needles, tiny crystals, or minute liquid inclusions that are common in tourmaline and can serve as natural fingerprinting for origin and authenticity. These inclusions are not structural flaws, they are part of the gem's natural character, and they can reassure a buyer that the stone is natural and untreated.

Origin plays a substantial role in the market perception and rarity of colored gemstones, and Mozambique has emerged in recent years as a source of exceptional pink and red tourmalines, including rubellite varieties. Mozambique material is known for vibrant, saturated colors and frequently fine clarity, making pieces from this locality highly sought after. The fact that this 10.64 carat piece is both untreated and from Mozambique increases its appeal to a discerning buyer, because large, vivid, natural pink tourmalines without enhancement are uncommon. For an educated purchaser considering investment or a high end bespoke setting, the combination of weight, intense color saturation, and polished presentation makes this stone notable. Moreover, the sugar loaf shape and its nearly square cushion footprint at approximately 12 millimeters on a side provide a generous visual impact while remaining practical for designers, offering flexibility for pendant, cocktail ring, or high profile cabochon inspired settings.

Practical considerations for ownership and setting are important for preserving value and beauty over time. Because the stone is natural and untreated, we recommend settings that protect the edges and the crown while allowing light to reveal the gem's color, such as a bezel with a well proportioned open back, or a secure prong mount that protects corners without overly shading the pavilion. Avoid exposing the gem to sudden extremes of heat or harsh chemicals, and when cleaning, use mild soap, warm water, and a soft brush or an air bulb to remove surface dust, ultrasonic cleaning can be used cautiously and only after consulting with a qualified jeweler familiar with tourmaline. The Natural Gemstone Company places emphasis on provenance and condition, and we are happy to provide additional photographic angles, magnified inclusion images, and independent grading or origin reports upon request, to support appraisal and insurance documentation. If you would like personalized advice on mounting this 10.64 carat Mozambique pink tourmaline, or if you wish to arrange a private viewing or obtain a formal report, please contact The Natural Gemstone Company and our gem specialists will assist you.