0.68 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This listing describes a transparent round blue sapphire weighing 0.68 carat, with precise dimensions of 5.09 x 4.99 x 3.55 mm. The gem is faceted in a mixed brilliant cut, providing a balanced combination of table brilliance and pavilion depth. Color is evaluated as vivid, with strong saturation and a clear blue hue that presents consistently across the table and crown facets. Clarity is graded as very slightly included when evaluated at eye level, and the surface finish is noted as excellent polish, contributing to crisp facet junctions and a refined overall appearance. The stone has been heat treated, a standard and stable enhancement, and originates from Ceylon Sri Lanka, a source known for its fine blue sapphires. The Natural Sapphire Company has selected this example for its combination of measured proportions, lively color, and high quality finish.

The mixed brilliant cut on this round sapphire is designed to optimize optical performance within the stone dimensions. The crown and pavilion facet layout supports strong return of light through the table, producing a balance of brightness and scintillation suitable for single stone settings. The near 5.1 millimeter diameter gives this gem a presence appropriate for delicate solitaire rings and refined pendant designs. The pavilion depth of 3.55 millimeters contributes to visual depth and color saturation without overly reducing face up spread. Excellent polish enhances facet reflectivity and reduces light leakage at facet junctions, while well executed symmetry maintains even light distribution across the table. These technical attributes combine to present the vivid blue color in a manner that reads as both lively and stable under varied lighting.

Inclusions in this sapphire are important and meaningful characteristics, and they serve as unique internal identifiers that add to the gem character. With a clarity grade of very slightly included at eye level, the stone shows only minor internal features to the unaided eye. Under magnification these features can be observed more clearly, and they may include fine needle like inclusions, isolated mineral crystals, and small stress related feathers that are consistent with natural formation and the geological environment of Sri Lanka. These internal features are often described as part of the stone fingerprint, useful for distinguishing natural sapphires from synthetic material and for documentation in gem reports. Rather than detracting from value, these inclusions contribute to provenance and individuality, confirming natural origin and providing reference points for matching paired stones or for future identification if required. They do not compromise overall stability, and because they are very slight at face up viewing, they retain the gem's eye appeal and durability for typical jewelry wear.

Practical considerations include the permanence of the indicated enhancement and appropriate settings for long term enjoyment. Heat treatment applied to this sapphire is the most common and accepted enhancement for blue sapphires, and when performed properly it is stable under normal wear conditions. Care should avoid sudden extreme temperature changes and harsh chemicals, and routine cleaning with warm soapy water and a soft brush is appropriate. The vivid blue tone pairs well with a variety of metals, including platinum, white gold, and yellow gold, allowing design flexibility based on personal preference. Given its measured proportions and clarity grade, the gem is well suited to be set as a center or accent stone, and its modest carat weight makes it an excellent choice for refined, everyday jewelry. For those seeking documentation, The Natural Sapphire Company can assist with certification options that detail the stone dimensions, treatments, origin, and clarity observations, ensuring a clear record of the sapphire characteristics for future reference.