0.91 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This pear shaped blue sapphire from Ceylon presents a study in considered proportions and classical gem cutting. The stone weighs 0.91 carat, and measures 7.35 by 4.65 by 3.59 millimeters, with transparency that allows precise evaluation of internal features. The cutting style is faceted, executed as a mixed brilliant cut, and the surface finish is an excellent polish. Clarity is graded as very very slightly included when evaluated at eye level, and the color intensity is described as intense, delivering a saturated blue field that reads strong in both direct and diffused light. The sapphire has been heat treated, a standard enhancement that optimizes tone and saturation while maintaining structural integrity, and its origin from Ceylon Sri Lanka contributes to its characteristic velvety brilliance. This gem is offered by The Natural Sapphire Company, a source with extensive technical expertise in selecting and presenting corundum specimens.

The mixed brilliant faceting on this pear integrates a brilliant crown arrangement with a pavilion that adopts more angular facet sets to enhance depth and color. The result is a balance between scintillation and flash, with small bright facets on the crown dispersing light into lively pinpoint highlights, while the pavilion facets channel and deepen the blue, preventing excessive light leakage. The measured proportions produce an overall depth of approximately three point five nine millimeters against a mean girdle diameter of about six point zero millimeters, yielding a depth percentage around sixty percent, a proportion that supports strong return and saturation in a pear silhouette. Facet junctions and symmetry have been refined to present crisp meeting lines, and the excellent polish ensures minimal surface disturbance, so the pavilion and crown work together to produce a stable optical performance that reads as both bright and saturated at a variety of viewing angles.

Color and clarity describe the character that will engage an informed collector over time. The intense color intensity in this sapphire manifests as a deep pure blue with subtle cool undertones that are typical of high quality Ceylon material, and the stone exhibits gentle pleochroism that allows slight shifts in blue tone depending on orientation, a feature that adds dynamic interest without introducing unwanted brown or gray masking. The inclusions are minute and localized, contributing to the very very slightly included grade at loupe and eye level, and they do not interrupt the gem’s overall transparency or brilliance. Heat treatment has been applied to stabilize chromophore distribution and to remove residual color zoning, a common and accepted practice in the trade that, when disclosed, preserves aesthetic appeal and long term stability. The combination of Ceylon provenance, intense saturation, and fine cutting yields an object that conveys both natural origin and careful lapidary intervention.

For practical ownership considerations, the sapphire’s corundum hardness of nine on the Mohs scale confers excellent resistance to everyday abrasion, making the gem suitable for rings, pendants, and other daily wear applications provided standard care is observed. The excellent polish and precise facet geometry mean the surface luster will remain vivid with routine cleaning methods such as warm soapy water and a soft brush, and periodic professional inspection of the mounting will protect the stone from mechanical stress. The permanence of the heat treatment and the inherent stability of blue corundum ensure that the intense color will continue to captivate over the years, while the controlled faceting will sustain the balanced light performance that defines its beauty. For customers who value technical refinement and provenance, The Natural Sapphire Company can advise on mounting styles that maximize the pear silhouette and preserve the gem’s optical dynamics, ensuring that this sapphire remains a compelling presence for decades.