2.42 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent blue sapphire weighs 2.42 carat, and measures 8.64 by 6.05 by 4.86 millimeters, presenting an emerald cut with crisp step facets and slightly clipped corners. The cutter has retained strong pavilion depth, yielding an overall depth of approximately 66.2 percent, a proportion that favors intense color return and minimizes windowing in step cut material. Color is graded as vivid, with a saturated, pure blue hue that remains uniform from table to girdle, and clarity is described as very very slightly included when evaluated at eye level, indicating minimal internal disruptions to light transmission. The stone has undergone standard heat treatment to optimize tone and transparency, and it displays an excellent polish across facet junctions and crown facets, preserving crisp facet contrast and a clean table surface. Origin is Ceylon Sri Lanka, and The Natural Sapphire Company has oriented the emerald cut to respect the corundum crystal habit, aligning the table with the prism axis to control color zoning and maximize face up saturation in this size range.

Geologically this sapphire is the result of prolonged metamorphic processes that occurred millions of years ago beneath the Ceylon highlands, where aluminum rich protoliths underwent high pressure and temperature reequilibration in the presence of silica poor fluids. During slow recrystallization corundum nucleated within gneiss and marble units, with trace amounts of iron and titanium substituting into the corundum lattice and enabling the intervalence charge transfer mechanism that produces blue coloration. Subsequent uplift and weathering liberated corundum crystals into alluvial gravels where natural tumbling rounded crystal terminations and concentrated gem material for later recovery. The lapidary stage at The Natural Sapphire Company respects that geological history, applying conservative heating protocols to reduce silk and enhance blue saturation while avoiding unnecessary diffusion, and executing a precise emerald step cut to accentuate the stone s natural color and clarity. The result is a technically refined gem that communicates its origin and treatment through disciplined cutting and polishing, offering a durable, vivid Ceylon sapphire that performs with strong face up color and precise optical symmetry.