2.59 Ct. Chrysoberyl from Tanzania

This transparent 2.59 carat cushion shaped chrysoberyl presents precise proportions and measured presence, with dimensions of 8.65 x 6.87 x 4.93 millimeters, a mixed brilliant cut, a clarity grade recorded as very very slightly included when evaluated at eye level, a medium intense greenish yellow color, and an excellent polish. This specimen is natural and untreated, with no enhancement, and it originates from Tanzania, a source known for producing gem quality chrysoberyl with stable color and good clarity. The cut has been executed to balance spread and depth for a stone of this weight, and the cushion outline produces a pleasing visual footprint that sits well in a variety of settings, as seen in the accompanying hand images. The product is offered by The Natural Gemstone Company, and its combination of weight, cut proportions, and finish make it suitable for use as a centerpiece in a ring or a pendant, where both face up presence and light performance are essential.

The exceptional sparkle of this chrysoberyl arises from the interplay between its intrinsic crystallographic properties and the considered facet design of the mixed brilliant cut, a relationship that governs how light is captured, redirected, and returned to the viewer. Chrysoberyl is inherently dense and refractive for a colored gemstone, and that density translates into a strong internal reflection commonly described as an adamantine luster, which amplifies brightness when facets are executed with precision. In this example the crown facets are arranged to create multiple small windows for light entry and to break incoming light into lively flashes, while the brilliant style crown works in concert with step oriented pavilion facets to generate both scintillation and crisp contrast patterns. The pavilion geometry has been controlled to ensure optimal angles for total internal reflection given the stone, which increases the volume of light that is returned rather than lost through the base, and the cushion shape with softened corners increases the variety of reflective planes, producing a dynamic play of light as the piece is moved. The very very slightly included clarity grade means that inclusions do not obstruct the principal light paths at normal viewing distances, allowing uninterrupted travel of light through the gem, and the excellent polish ensures that each facet edge acts as a mirror without diffusion, preserving sharp flashes and clean facet junctions.

Color and internal structure further refine the perceived sparkle, because the medium intense greenish yellow hue is saturated enough to give the stone identity without overwhelming the brightness produced by its high surface and internal reflectivity. The presence of natural trace chemistry from Tanzanian formation conditions contributes to a balanced tone, which interacts with facet reflections to create lively internal contrasts, noticeable as bright flashes against deeper color flashes when the gem is rotated. The mixed brilliant cut was specifically chosen to maximize this effect for a stone of these proportions, preserving table size to deliver face up presence while using pavilion steps to deepen color when needed, a quality that results in sustained visual interest and an appearance that alternates between lively sparkle and rich color depending on light and movement. The gem is durable, with a hardness that allows for everyday wear in typical jewelry settings while still demanding sensible care to avoid hard impacts and abrasive contact during strenuous activities. Because this chrysoberyl is untreated, its optical performance and color are stable, and its provenance from Tanzania provides a documented natural origin that collectors and designers appreciate.

For setting and use considerations The Natural Gemstone Company recommends designs that allow light to enter through the crown while providing secure support at the girdle, as this will best preserve the stone's light return and face up appearance. Prong or open gallery settings will enhance the interaction with ambient light, and careful selection of metal and surrounding stones can either accentuate the greenish yellow tone or provide contrast to highlight the gem's brilliance. Additional high resolution imaging and light performance photography are available on request for precise mounting decisions, and our specialists can advise on proportions and mounting solutions that maintain the cutting angles and polished facet planes that create the gem's distinctive sparkle. This chrysoberyl represents a measured combination of natural origin, thoughtful cutting, and excellent finish, delivering a clarity of light and color that is the product of both the stone's internal structure and the cutter's approach to maximizing its optical potential.