2.59 Ct. Topaz from Ceylon (Sri Lanka)

This transparent sky blue topaz weighs 2.59 carat, presenting a measured and substantial presence for fine jewelry applications. The gem is fashioned in a classic emerald cut, its rectangular outline defined by precise step facets and crisp, parallel facet lines. The dimensions are 8.90 x 6.99 x 4.85 mm, a proportion that balances face up area with depth to preserve both brilliance and a defined step cut character. Origin is Ceylon, Sri Lanka, a historic source for well cut and attractively colored gems, and the stone has been treated by irradiation, a standard trade enhancement used to achieve and stabilize the blue hue. Clarity has been graded as very very slightly included, evaluated at eye level, and the polish has been assessed as excellent, with facet surfaces exhibiting mirror like smoothness across crown and pavilion. The Natural Gemstone Company presents this topaz as a premium example within its size class, with weight and finishing that support placements in high grade, bespoke designs.

The emerald cut faceting of this piece emphasizes geometry and internal light movement, relying on broad, linear crown facets and tiered pavilion steps to produce a refined hall of mirrors effect rather than scintillation typical of brilliant cuts. The rectangular table provides a dominant face up window, which is ideal for assessing color and clarity, while the measured pavilion depth at 4.85 mm supports internal reflection and minimizes light leakage. Precision in facet junctions and symmetry is evident, the facet planes meeting with uniformity and consistent angles that control the path of light through the stone. Such exacting faceting reduces the visibility of small inclusions, supporting the very very slightly included clarity grade, evaluated at eye level, by preventing undue concentration of light around inclusion sites. The excellent polish contributes to unimpeded light transmission, maximizing the clean, glassy appearance that collectors associate with premium topaz cut by experienced lapidaries.

Color analysis of this sky blue topaz places it at a very light color intensity, with a clear, airy blue hue that reads as true sky blue across common lighting conditions. The irradiation enhancement has been executed to deliver an even, evenly distributed blue tone throughout the body of the gem, avoiding zonal color irregularities that can detract from overall eye appeal. In face up presentation the gem displays a delicate and luminous blue, its step facets producing subtle flashes and broad reflections that emphasize tone rather than dispersive sparkle. Under cooler daylight the stone appears crisp and slightly more saturated, while under warm artificial illumination the blue shifts toward a softer, more pastel expression, a behavior predictable for stones of this color intensity. The combination of the emerald cut and measured proportions has been chosen to maintain clarity and to present the color in a balanced manner, ensuring that the very light intensity reads as intentional elegance rather than weakness.

Craftsmanship and finish reflect a high level of lapidary skill, evident in the uniform girdle thickness, well centered table, and controlled facet proportions. The stone exhibits a clean culet alignment with the table, and facet intersections are sharp and consistent, indicating careful polishing sequences and accurate transfer from preform to final cut. The excellent polish, assessed under standard gemological lighting, minimizes surface abrasion and preserves the luster necessary for premium presentation. The clarity grade, very very slightly included, evaluated at eye level, denotes that inclusions are minimal in size and position, confined to areas that do not compromise the structural integrity or optical performance of the gem. As part of our quality control, The Natural Gemstone Company documents measurements and visual assessments, confirming the 8.90 by 6.99 by 4.85 mm dimensions and the 2.59 carat weight, and ensures that the irradiation enhancement and Sri Lankan provenance are recorded for buyer transparency.

At 2.59 carat this emerald cut sky blue topaz occupies a desirable weight class, offering significant face up presence while maintaining the refined optical character associated with step cuts. For collectors and designers seeking a premium topaz that combines clarity, precise cutting, and a stable, trade standard enhancement, this stone provides an optimal balance between visual impact and technical merit. The measured dimensions and excellent polish support settings that showcase the rectangular table and linear facet architecture, including solitaire mounts, halo compositions that frame the step cut geometry, or bespoke designs that leverage the stone as a focal element. The Natural Gemstone Company stands behind the gem technical profile, offering additional technical imagery, certification options, and consultation on setting proportions to preserve the cutting geometry and face up appeal. Prospective buyers seeking a detailed cut diagram, facet map, or further photomicrographic evidence of the very very slightly included clarity grade are invited to request supplementary data, which we supply to support informed purchasing decisions.