0.71 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent 0.71 carat round blue sapphire measures 5.62 by 5.63 by 3.05 millimeters, with a calculated depth ratio of 54.2 percent, a proportion that yields an efficient balance between face up spread and pavilion retention of light. The stone is faceted in a mixed brilliant cut, combining a brilliant style crown with a precision pavilion geometry to maximize scintillation and concentrated blue saturation under various lighting conditions. The mixed brilliant layout produces crisp facet junctions and a well controlled table size, and the near perfect symmetry evidenced by the nearly identical diameters indicates careful preform work and exacting lapidary control. Clarity is described as very slightly included, evaluated at eye level, meaning the stone remains transparent with minimal internal features that do not materially interrupt light transmission at normal viewing distances, and the excellent polish enhances facet brightness and optical contrast across the crown and pavilion facets.

This sapphire is heat treated, a standard and stable enhancement applied to optimize both hue and internal clarity while preserving structural integrity, and its provenance from Ceylon Sri Lanka further elevates its desirability and market value. Ceylon sapphires are historically prized for their clean, lively blues and for the geological conditions that produce well crystallized corundum with attractive trace element balances, attributes that translate into better cutting outcomes and stronger buyer confidence. For collectors and designers who value origin, the Ceylon designation conveys provenance premium and a consistent expectation of color character and clarity potential, a premium we stand behind at The Natural Sapphire Company. At 0.71 carat with compact dimensions and an intense color intensity, this gem is ideal for a finely proportioned solitaire or halo mounting, and its mixed brilliant faceting will deliver controlled brilliance, vivid color saturation, and durable wearability in everyday settings.