1.43 Ct. Emerald from Colombia

This transparent round Colombian emerald weighs 1.43 carats, and measures 7.77 by 7.68 by 4.19 millimeters, presented in a mixed brilliant cut, with a clarity grade of slightly included at eye level, vivid color intensity, and an excellent polish, enhancement recorded as standard. The mixed brilliant design combines a precisely faceted brilliant crown with a modified pavilion geometry that is calibrated to enhance both color saturation and light return, a balance that is especially important for emeralds where hue and body color are primary determinants of value. The vivid green tone is unmistakable and distinctly Colombian, exhibiting the saturated chroma that collectors and connoisseurs seek. The proportions yield a measured depth of approximately 54 percent relative to average diameter, a proportion that optimizes internal light scattering while preserving the stone volume so the body color reads with depth rather than appearing dark or washed out. The Natural Emerald Company presents this stone as an example of targeted lapidary design, where the cutter prioritized color retention and scintillation in equal measure.

The mechanism by which this emerald achieves an unmatched sparkle lies in the interplay of its crystal properties and its faceting scheme. Beryl, the mineral species to which emeralds belong, has a refractive index in the neighborhood of 1.577 to 1.583 and a small but measurable birefringence, properties that govern how light is refracted and split as it traverses the crystal lattice. The mixed brilliant cut takes advantage of these optical constants by using a multi facet crown with precise angular relationships that encourage total internal reflection at the pavilion facets, while the modified pavilion steers light back through the crown facets in controlled bursts. The result is a complex pattern of return flashes and scintillation, where lively white brilliances delineate facet edges and saturated green flashes emphasize body color. Slight inclusions, typical of fine Colombian material and noted in this stone as slightly included at eye level, contribute to the character of the response, sometimes acting as micro reflectors that seed additional pinpoint flashes, and sometimes creating delicate internal contrast that enhances perceived depth. The excellent polish amplifies these effects by minimizing surface diffusion and allowing sharp facet junctions to produce crisp mirror like reflections. The combined effect is a gemstone that sparkles with a complexity that differs from high dispersion stones, relying instead on facet architecture and internal structure to create a lively and luxurious visual field.

From a craftsmanship and practical perspective, this emerald offers versatility and enduring appeal. The cutter maintained clean facet symmetry and an even girdle profile to facilitate secure mounting in standard fine jewelry settings while preserving maximum visible table area for color display. The excellent polish ensures that the stone needs minimal post mounting finishing to achieve optimal brilliance. Standard enhancement, the norm for Colombian emeralds, has been applied in a controlled manner to improve apparent clarity without compromising structural stability, and routine care instructions can be provided to preserve that treatment over time. For designers and collectors who demand a gemstone with technical integrity and aesthetic splendor, this specimen presents a compelling mix of measurable parameters and sensory impact. The Natural Emerald Company stands behind the selection process and documentation for this emerald, and can provide further lapidary data, imagery, and setting recommendations to ensure the stone performs at its best in any bespoke creation.