5.11 Ct. Topaz from Ceylon (Sri Lanka)

One exquisite transparent 5.11 carat sky blue topaz, cut to an elegant emerald shape, presents a refined combination of size, clarity, and color that knowledgeable collectors and connoisseurs will immediately appreciate. This gem measures 10.92 by 8.90 by 6.20 millimeters, offering a generous face up appearance that is ideal for a bold solitaire ring or a refined pendant. Originating from Ceylon, Sri Lanka, the stone carries the provenance of one of the world renowned sources for fine gem material, and it has been treated by irradiation in a controlled process to produce the stable and vivid blue tone. The overall color intensity is medium light, which provides a cool sky blue that is pleasing to the eye while retaining excellent saturation and balance across the table and facets. The clarity has been evaluated as very very slightly included at eye level, and the polish is excellent, resulting in a stone that reads clean and lively to a standard loupe and to the unaided eye.

When assessing quality, clarity and inclusion character are central to value and performance. The very very slightly included description at eye level indicates that any natural inclusions are minimal, well isolated, and do not materially interrupt the path of light through the gemstone, which preserves the purity of the blue and the transparency. For a topaz of this size, that clarity grade is particularly desirable because it allows the emerald cut facets to act as broad mirrors without disruptive cloudiness. The medium light color intensity offers an elegant and wearable hue, distinct from overly pale specimens that can appear washed out, and from overly dark material that can lose its topaz like sparkle. The irradiation enhancement is a standard, stable, and accepted treatment for blue topaz, and it is disclosed here to provide full transparency regarding the stone history. Ceylon provenance is noted because Sri Lankan topaz often exhibits fine crystalline structure and uniformity of color uptake, attributes that support consistent polish and brilliance.

The emerald cut is a step cut with long parallel facets, and it is particularly effective at showcasing the intrinsic qualities of a transparent topaz. Rather than producing the scintillating pinpoint flashes associated with brilliant cuts, the emerald cut emphasizes broad flashes of light, linear reflections, and a hall of mirrors effect that gives the gem a sophisticated, architectural appearance. The large table of the emerald cut permits an uninterrupted view into the gemstone, allowing the medium light sky blue to present evenly and attractively across the face up view. The crown angles and pavilion depth have been executed to maintain a pleasing balance between brightness and contrast, so light entering the table can reflect off the pavilion facets and return with vividness and clarity. The proportions implied by the measurements, including the depth of 6.20 millimeters relative to the length and width, support a lively return of light while preserving a strong face up surface area, which is highly valued in design applications for rings and pendants. The excellent polish further enhances each facet boundary, sharpening the contrast between step facets and maximizing the linear reflections that are the signature of a well cut emerald topaz.

For an educated buyer considering this gem, the combination of weight, cut, clarity, and origin creates a compelling value proposition. At 5.11 carats the stone has substantial presence, and its emerald cut offers a timeless silhouette that translates seamlessly into high end jewelry, whether set in a classic four prong ring, a bezel set pendant, or a contemporary open gallery setting that highlights the hall of mirrors effect. The disclosed irradiation treatment produces a stable color that will endure normal wear, and the excellent polish and VVS eye level clarity mean the gem will perform beautifully under different lighting conditions, from daylight to evening lamps. The Natural Gemstone Company stands behind the sourcing and presentation of this topaz, offering clear information on provenance and treatment to empower confident purchasing decisions. For those seeking a refined, transparent blue topaz with technical precision in cut and finish, and with the documented origin from Ceylon, this emerald cut sky blue topaz represents a distinguished and well reasoned choice.