15.93 Ct. Orange Cabochon Citrine from Brazil

Millions of years ago, deep within the crust of what is now Brazil, silica rich fluids circulated through fractures and cavities in igneous and metamorphic host rocks. Heat from nearby magmatic activity drove these fluids, carrying trace amounts of iron and other elements, into open spaces where slow cooling allowed quartz to crystallize. Under steady pressure and a stable chemical environment, microscopic inclusions and trace iron centers became incorporated into the growing crystal lattice, imparting the warm orange hues characteristic of citrine. Over geological time scales, repeated episodes of burial and uplift polished adjacent rock surfaces and liberated well formed crystals, which settled into alluvial deposits and later into the hands of miners. This specimen, now a transparent 15.93 carat oval, embodies that long history, its body of color the result of natural iron related chromophore centers, subsequently refined by human heat treatment to achieve the intense and consistent orange tone seen today.

The gem presents as an oval shaped cabochon, with dimensions of 19.93 by 14.04 by 8.97 mm, exhibiting a smooth domed profile and an excellent polish that maximizes its clarity and color. The cutting style is cabochon, selected to emphasize the gem tone and the even distribution of color, while preserving the stone for settings that benefit from a smooth surface. Clarity is graded as eye clean, evaluated at eye level, confirming there are no inclusions apparent to unaided vision that would detract from its visual appeal. Color intensity is described as intense, and the stone is transparent, attributes that together create a vivid and luminous presence. The gem has undergone heat treatment, a stable and widely accepted enhancement method used to develop and stabilize the citrine color. Origin is Brazil, a region renowned for producing high quality citrines within complex geological terranes. The Natural Gemstone Company presents this piece with documentation of its characteristics, and with the assurance that the cutting and finishing were executed to highlight the specimen's natural history, structural integrity, and gemological properties. This citrine is suitable for jewelers and collectors seeking a substantial, well proportioned cabochon that communicates both geological provenance and refined craftsmanship.