2.61 Ct. Blue Star Sapphire from Ceylon (Sri Lanka)

One natural blue star sapphire, opaque, 2.61 carats, oval shape, with measured dimensions 7.49 x 7.07 x 5.57 mm, is offered by The Natural Sapphire Company. The stone is fashioned as a cabochon, the traditional cut for asteriated sapphires, and was evaluated as very very slightly included at eye level, indicating minimal visible inclusions to the unaided eye. The body color is described as blue with medium color intensity, providing a balanced backdrop for the star, and the surface presents an excellent polish. No enhancements have been applied to this gem, the material is in its natural state, and the documented origin is Ceylon, Sri Lanka, a source renowned for quality star sapphires.

Optical character and asterism are central to the gemmological description. This sapphire displays a distinct star effect when illuminated by a single, direct light source, produced by the alignment of fine rutile silk within the corundum. The star is centered on the dome and becomes more pronounced as the light is moved, a characteristic mobility that demonstrates well executed cutting and appropriate dome height. The medium color intensity of the body facilitates good contrast between the star and the surrounding color, allowing the asterism to read clearly without being overwhelmed by excessive saturation or darkness. Clarity is supportive of the phenomenon, the very very slightly included grade reflecting that the inclusions responsible for the star do not detract from visual appeal when the stone is viewed in practical lighting conditions.

The cabochon proportions, including a dome height of 5.57 mm, have been selected to optimize asterism and overall appearance. The oval outline measures 7.49 by 7.07 mm, offering a near symmetrical profile that suits a wide range of mounting styles. The excellent polish enhances surface luster and optical response, minimizing surface reflections that could interfere with the perception of the star. Given its weight and dimensions, this sapphire is well suited to ring settings where the dome can catch directional light, and it also adapts readily to pendants and brooches. Because the stone is unenhanced, its intrinsic character and natural silk structure are preserved, an important consideration for collectors and those seeking untreated gemstones for bespoke settings.

Provenance and care are important aspects of this description. Ceylon, Sri Lanka has a long established history for producing quality corundum material and the documented origin adds context to the gemmological attributes observed. The Natural Sapphire Company stands behind the accuracy of the evaluation, and we provide detailed information on the gem when requested. Routine care for a star sapphire of this type includes cleaning with warm soapy water and a soft brush, avoiding harsh chemicals and repeated exposure to high heat, and consulting a professional before subjecting the stone to ultrasonic cleaning or other processes. For setting and design guidance, lighting considerations to best display the star, or additional measurements and images, please contact The Natural Sapphire Company and we will provide further technical details and photographic documentation.