1.71 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 1.71 carat oval blue sapphire carries within it a geological history that spans millions of years, originating in the ancient terrains of Ceylon, Sri Lanka. The island is underlain by high grade metamorphic rocks that were formed during deep crustal processes, when intense heat and pressure transformed aluminum rich protoliths into gneisses and schists. Under those conditions, aluminum oxide crystallized as corundum, and trace amounts of iron and titanium became incorporated into the crystal lattice. The subtle balance of these trace elements is responsible for the medium color intensity of this sapphire, producing a clear blue hue that is neither pale nor overly saturated, but instead exhibits a refined and even tone. Crystal growth proceeded slowly, allowing the formation of a transparent body with internal features that record the stone’s genesis, and the resulting material was eventually liberated from its host rock by weathering and erosion, concentrating in gem bearing gravels over long time scales.

After its liberation from bedrock, this sapphire continued to undergo natural sorting and transport within alluvial systems, a journey that polished its exterior surfaces and left a signature of fine inclusions and growth structures within. The specimen presented here measures 7.73 by 5.87 by 4.47 mm, and it displays a mixed brilliant cut that was selected to optimize both face up color and light return. The clarity grade is reported as very very slightly included evaluated at eye level, indicating that inclusions are minimal and do not detract from the gem’s overall transparency and visual appeal. The stone is transparent, with an excellent polish that enhances its brilliancy and allows the blue color to read consistently from different viewing angles. As is common for material from this region, the sapphire has undergone heat treatment to improve color uniformity and reduce the visibility of some internal features. This enhancement is a stable, widely accepted practice that refines the stone’s natural attributes without altering its fundamental identity as Ceylon origin sapphire.

The mixed brilliant cut and oval outline of this sapphire were executed with precision to preserve weight while maximizing optical performance, and the proportions reflect a careful balance between depth and spread for optimal wearability in a variety of settings. The pavilion facets interact with the table and crown to return light with lively scintillation, while the excellent polish delivers crisp facet junctions and a smooth surface finish. From a gemological perspective, the combination of transparent material, medium color intensity, and very very slightly included clarity evaluated at eye level makes this stone versatile for both classic and contemporary jewelry designs. The provenance of Ceylon, Sri Lanka adds an additional layer of historical and geological significance, and The Natural Sapphire Company documents this origin as part of its commitment to traceability and responsible sourcing. This sapphire is presented with clear specification of its measurements, clarity, cut, polish, color intensity, and enhancement, enabling an informed appreciation of the stone from its deep time origin to its ready state for setting.