0.67 Ct. Green Sapphire from Madagascar

This transparent green sapphire, a pear shape weighing 0.67 carat, presents a refined balance of size and presence, with dimensions of 5.83 by 4.64 by 3.54 millimeters. The gem has been fashioned in a mixed brilliant cut that harmonizes a faceted crown with strategic pavilion geometry to maximize light return and optical depth, and it carries an excellent polish. Clarity has been evaluated at eye level as very very slightly included, a grade that indicates minimal internal features that do not detract from visual performance under normal viewing. Color is described as medium intensity green, a natural hue derived from trace elements within the crystal lattice, and the stone has not undergone any enhancement. The origin of this sapphire is Madagascar, and the piece is offered through The Natural Sapphire Company with full disclosure of its characteristics.

The formation of this sapphire is a narrative written in deep time, extending back millions of years to a dynamic geological setting beneath the surface of what is now Madagascar. Corundum, the mineral species that composes sapphire, crystallizes from aluminum rich environments under high temperature and pressure. In this case the crystal grew where aluminum oxides encountered conditions unfavorable for silica, allowing corundum to form rather than common silicate minerals. Trace amounts of iron and titanium were incorporated into the crystal structure as it crystallized, producing the green hue that distinguishes this stone from blue and pink varieties. Over extended intervals of tectonic activity, uplift and erosion exposed primary host rocks, and subsequent weathering liberated corundum crystals into alluvial systems where they were concentrated in gravels and riverbeds.

The path from rough crystal to the polished pear shape involved considered lapidary decisions to preserve weight while revealing the stone’s optical potential. The mixed brilliant cut used here allocates faceting to enhance scintillation and to balance face up color distribution, an approach that is particularly effective for stones of medium color intensity. The cutter optimized girdle proportion and pavilion angles to control light leakage and to enhance perceived depth, while the excellent polish ensures crisp facet junctions and minimal surface disturbance. At eye level the very very slightly included clarity grade means that the inclusions are small and sparse, they do not interrupt the clean window seen through the table, and they contribute to the gem’s natural identity rather than detracting from its appearance. The result is a gem that presents consistent color and lively facet play when viewed in hand.

Provenance from Madagascar informs both the geological story and the ethical context of the gem, Madagascar being a known source for well colored corundum specimens formed under basaltic and metamorphic regimes. No treatment or enhancement has been applied, ensuring that the color and clarity are entirely natural attributes. For the client seeking a compact, well proportioned green sapphire, this 0.67 carat pear offers material integrity, transparent origin documentation, and lapidary refinement. The Natural Sapphire Company provides this description to assist in evaluation and setting decisions, and to document the specimen’s physical and gemological properties for responsible acquisition.