0.54 Ct. Greenish Blue Sapphire from Madagascar

This transparent 0.54 carat round greenish blue sapphire presents as a meticulously cut gem, measuring 4.49 x 4.50 x 3.56 mm, with a mixed brilliant faceting scheme that balances visual sparkle and color distribution. The mixed brilliant approach pairs a brilliant style crown with a pavilion that favors modified step and brilliant facets, creating a controlled interplay of scintillation and broad flash. With an excellent polish and precise facet junctions, the stone returns light with crisp, lively reflections, while the round outline maintains symmetrical light performance when viewed face up. The medium light color intensity reads as a cool greenish blue in direct lighting, and in different angles the color displays subtle variation that enriches its visual depth. Clarity is graded slightly included at eye level, meaning natural inclusions are present but do not materially obscure transparency or interrupt the primary light paths, and the stone remains visually clean in most settings. The combination of the mixed cut and the gem proportions provides a pleasing balance between brightness and color saturation, rendering the sapphire immediately attractive for detailed jewelry designs where both optical activity and tonal nuance are valued.

From a gemological and treatment perspective this sapphire has been heat treated, a standard and stable enhancement that improves color uniformity and reduces the appearance of internal silk without compromising the structural integrity of the corundum. Heat treatment in sapphire is widely practiced and accepted in the marketplace, and it is fully disclosed for this gem. The origin of the material is Madagascar, a source known for producing a diverse range of sapphire hues and crystal habits. Madagascar sapphires can carry characteristic internal features and color zoning that speak to their natural formation, and the slightly included clarity observed here is consistent with natural growth patterns from that region. At The Natural Sapphire Company we document origin and treatment, and this stone is offered with provenance information and full disclosure as part of our standard gem documentation. The Natural Sapphire Company sources this sapphire through established relationships with vetted suppliers in Madagascar, and our sourcing protocols emphasize traceability and honest representation so that each gem you purchase carries a clear history of both geological and human care.

Ethical sourcing is integral to how this sapphire is presented to the conscious buyer, and it fits naturally into a collection that prioritizes social and environmental responsibility alongside technical excellence. The Natural Sapphire Company maintains direct channels and auditing practices that seek to ensure fair labor conditions and minimized environmental impact at the mine and in local communities. We prioritize sourcing partners who implement progressive rehabilitation practices and who contribute to community development, and we provide clients with transparent information regarding the chain of custody for each gem. For the environmentally and socially minded consumer, this sapphire offers the assurance of a documented origin and responsible handling, combined with the enduring qualities of corundum that make sapphires suitable for long term wear, repair, and heirloom reuse. Choosing a heat treated natural sapphire from a vetted Madagascar source allows clients to support traceable mining economies without compromising on gemstone quality or ethical standards.

In practical design terms this 0.54 carat round sapphire is versatile for both refined classic settings and contemporary, responsibly designed pieces. Its modest size and consistent cut make it ideal as a delicate center stone in minimal engagement settings, as the focal point in a trilogy or cluster design, or as an articulate accent paired with responsibly recycled metals. Because the stone exhibits excellent polish and stable color, it will perform well in both open prong settings that maximize light return and protective bezel settings that emphasize durability for daily wear. Slight internal inclusions that are stable and not surface reaching do not pose undue risk to setting resilience, however conscientious mounting and routine care will maximize longevity and preserve the gem optics. For clients assembling a conscious collection, this sapphire offers technical refinement, transparent treatment and origin disclosure, and compatibility with sustainable jewelry practices, and it is available with full documentation and personalized consultation through The Natural Sapphire Company.