0.65 Ct. Blue Spinel from Ceylon (Sri Lanka)

This offering from The Natural Gemstone Company is a transparent blue spinel, weighing 0.65 carat, presented in a cushion shape with a mixed brilliant cut. The gem measures 5.55 by 4.78 by 2.78 millimeters, and displays an intense color saturation with an even tone across the table and crown facets. Clarity is graded as very slightly included, evaluated at eye level, which corresponds to minor inclusions that do not detract from transparency or overall visual appeal. The polish is excellent, and the stone is natural, with no enhancement. The origin is Ceylon, Sri Lanka, and these provenance details are provided to support accurate identification and valuation.

Spinel is well regarded for its durability in jewelry applications, and this specimen is particularly suitable for daily wear. Spinel has a Mohs hardness of eight, which places it significantly above common metals and many other gemstones, and affords strong resistance to scratching during normal contact and wear. The species also lacks true cleavage, reducing the risk of splitting under impact, and spinel exhibits good toughness that helps it withstand the day to day knocks that rings and bracelets commonly experience. The combination of substantial hardness and the absence of perfect cleavage makes this cushion blue spinel a practical choice for settings that will be worn frequently, including rings, pendants, and earrings.

Beyond inherent material strength, the gemological characteristics of this cushion mixed brilliant cut enhance both durability and optical performance. The mixed brilliant design pairs a faceted crown with a more brilliant pavilion, optimizing light return while maintaining a robust pavilion depth that helps protect facet junctions from chipping. The proportions of this stone, including its modest table and well balanced depth, contribute to a stable profile that sits securely in many mounting styles. The intense blue color benefits from the well executed cut, as the facet arrangement supports uniform color distribution and lively scintillation, which preserves visual interest even under lower light conditions. Excellent polish further reduces microabrasion risks and contributes to long term retention of surface luster.

Care and setting recommendations are straightforward, given the stone characteristics. For maximum protection during everyday use, consider secure settings such as a bezel, partial bezel, or four or six prong mountings with well formed prongs, ensuring the girdle is fully supported. Low profile settings help minimize incidental impact, while still allowing adequate access for cleaning. Cleaning may be performed with warm water, a mild detergent, and a soft brush, followed by gentle drying with a soft cloth. Because this spinel is natural and untreated, it is generally safe for ultrasonic and steam cleaning, however any stone with internal features should be handled with individual assessment, and professional cleaning and inspection at regular intervals is advised to ensure the mounting remains secure. The Natural Gemstone Company provides the documented details of origin, treatment status, and gemological attributes to assist jewelers and buyers in making informed decisions about appropriate settings and care.