6.40 Ct. Blue Sapphire from Ceylon (Sri Lanka)

The Natural Sapphire Company presents a transparent 6.40 carat emerald cut blue sapphire, measuring 13.32 by 8.41 by 5.60 millimeters, that combines considerable size with refined gemological qualities. The stone displays vivid color intensity across a clean face up, enhanced by an excellent polish that allows the rich Ceylon blue to read evenly from table to girdle. Clarity is graded very very slightly included, evaluated at eye level, which means that under normal viewing the gem is effectively eye clean while retaining the natural character that discriminating collectors value. Origin is Ceylon, Sri Lanka, a source renowned for sapphires with a lively, saturated blue that commands premium interest from educated buyers, and the gem has been enhancement, heat treated, a widely accepted and stable treatment that improves color while being fully disclosable. The emerald cut amplifies the stone's color and presence, offering a generous table and step facets that emphasize tone and hue rather than scintillation, an aesthetic many connoisseurs prefer for larger colored stones.

From a durability standpoint this sapphire is exceptionally well suited to daily wear, corundum ranks at a hardness of 9 on the Mohs scale, second only to diamond, providing outstanding resistance to scratching during routine activities. Unlike many colored stones that exhibit perfect cleavage, sapphire lacks a true cleavage plane and possesses good toughness, making it far less prone to splitting from knocks when set and worn properly. The emerald cut, with its less pointed pavilion facets and broader girdle, is inherently stable, and combined with the gem quality described, this stone is ideal for rings, pendants, or other jewelry intended for regular use. For additional protection and long term security, settings such as bezel or low profile four prongs are recommended, they reduce exposure of the girdle and corners while preserving the stone's visual appeal. The Natural Sapphire Company is available to advise on settings and certification, ensuring this Sri Lankan 6.40 carat sapphire performs beautifully as an enduring and wearable investment.