0.62 Ct. Greenish Blue Sapphire from Madagascar

This emerald cut, transparent sapphire presents as a compact and technically refined specimen, weighing 0.62 carat and measuring 5.60 x 3.74 x 2.81 mm, with a faceted cutting style and an emerald cut profile. The tone reads as a greenish blue with medium color intensity, providing a balanced face up appearance that reads neither overly saturated nor weak, and the clarity is graded as slightly included when evaluated at eye level, which contributes character without compromising light transmission. The gem is unenhanced, with no treatment applied, and the polish is excellent, yielding crisp facet junctions and clean reflections across the table and step facets. These precise specifications inform both the visual performance and the technical suitability for fine settings, where controlled light return and color orientation are essential considerations for a refined finished piece.

The journey of this sapphire begins in Madagascar, where the island geology yields a variety of corundum material with complex zoning and attractive color combinations. Artisanal miners extract the rough from pegmatitic and metamorphic horizons, and the initial sorting phase separates transparent material from heavily included or opaque pieces, based on refractive response and visible color under controlled light. The rough that ultimately yielded this 0.62 carat emerald cut was mapped to identify color zoning, cleavage directions, and inclusion placement, with orientation selected to maximize face up color and to minimize potential windowing in the final stone. Responsible sourcing protocols were observed during collection and export, ensuring traceability from mine lot to cutter, and each step of the early supply chain was governed by documentation that supports ethical procurement and quality control.

Cutting and finishing prioritized a classic step facet arrangement, where parallel crown steps and pavilion steps frame a broad table to emphasize color and clarity rather than scintillation alone. The cutter oriented the pavilion depth to achieve an optical balance, limiting an excessively large table that can create a washed appearance, and avoiding a deep pavilion that could trap light and mute the gem. The emerald cut geometry in this instance creates linear echoes of color across the length of the stone, with facet planes calibrated to reflect the greenish blue tone evenly, while slight inclusions remain positioned to the perimeter or within lower step planes to reduce visual impact at typical viewing distances. Polishing employed progressively finer diamond laps to secure an excellent finish, yielding smooth facet planes, sharp facet junctions, and minimal polishing abrasions, which is particularly important for step cuts where facet plane integrity defines overall appearance. The result is a transparent gem with clarity that is easily understood within the context of natural corundum, and the absence of enhancement preserves the sapphire chemistry and original crystal habit.

From the polished stone to market, the logistics emphasize selection, grading, and presentation, and this sapphire was chosen by The Natural Sapphire Company for its combination of exact dimensions, natural color, and artisanal cutting quality. Our gemologists performed systematic evaluation under controlled illumination to confirm carat weight, measurements, clarity grade, color intensity, and treatment status, and provided photographic documentation to communicate the stone face up and in hand. Recommended settings for this emerald cut include a tailored bezel that protects the step facet girdle, or a minimalist four prong mount that allows the linear facets to read along the finger, with consideration given to orientation to maintain the perceived color distribution. For clients seeking maximum color presence, a slightly yellow or warm metal can be employed to enrich the greenish blue tone, while white metal settings will emphasize the cooler aspects of the spectrum and the stone transparency. Care instructions include regular gentle cleaning with warm soapy water and a soft brush, storage separate from harder materials to avoid accidental abrasion, and periodic inspection of the mounting to ensure secure retention. The Natural Sapphire Company stands behind this gem with provenance information and a commitment to technical accuracy, offering the option of custom design or secure purchase for collectors and connoisseurs who value precise cutting, natural color, and ethical sourcing.