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

This blue star sapphire is a superb addition to any high end gemstone collection, offering an impressive combination of size, color, natural asterism, and provenance. Weighing 11.00 carats, this oval shaped gem measures 12.41 by 11.29 by 6.94 mm, and has been expertly fashioned as a cabochon to maximize the star effect. The stone is translucent with vivid color intensity and an excellent polish, qualities that are immediately apparent when the gem is examined under direct light. Importantly for the discerning collector, this sapphire has received no enhancement, and it originates from Ceylon Sri Lanka, a source renowned for producing some of the finest blue sapphires in the world. At The Natural Sapphire Company we present this gemstone as a museum caliber example of classic asterism combined with clean material and honest treatment disclosure.

From a grading perspective this star sapphire demonstrates many attributes that an educated buyer will value. The clarity is graded as very slightly included when evaluated at eye level, which means that inclusions are minimal to the unaided eye and do not detract from the gem when viewed face up. Those inclusions are in fact essential to the specimen, because the intersecting rutile needle inclusions that create the star are internal features that give star sapphires their character and market appeal. The cabochon cut and the gently domed profile with a height of 6.94 mm have been proportioned to produce a distinct and well centered six ray star that moves crisply across the dome when the stone is tilted under a single point light source. The excellent polish on the dome enhances the star contrast and allows the vivid blue body color to sit cleanly behind the asterism, a combination that collectors prize because it offers both aesthetic beauty and strong gemological interest.

The origin of Ceylon Sri Lanka carries both historical prestige and practical implications for value and appearance. Ceylon blue sapphires are often admired for their lively, pure blue tones and for a clarity that can be more translucent than the often heavily saturated stones from other sources. This specimen displays a vivid intensity that is balanced with a translucency sufficient to showcase the star without appearing chalky or overly silky, a balance that is relatively uncommon and therefore desirable. The fact that the gem is natural and not subject to heat treatment or other enhancements elevates its rarity profile, because most gem quality sapphires offered on the market have undergone some form of thermal modification to improve color or clarity. For a collector focused on provenance and natural state, a Ceylon star sapphire of this size and condition represents a meaningful and durable store of aesthetic and intrinsic value.

For practical collection and jewelry considerations the gem is versatile both as a display piece and as the centerpiece of a custom commission. Its 11.00 carat weight and the substantial dome produced by the 6.94 mm depth will read as a significant presence in a signet or statement ring, or as the focal point of a pendant that allows the star to be observed under directional lighting. From a care standpoint the gem benefits from standard sapphire hardness and toughness, but as with all cabochons it is best protected from hard knocks and abrasive contact, and routine cleaning with warm soapy water and a soft brush will maintain its polish and luster. At The Natural Sapphire Company we back our gemstones with detailed provenance and gemological evaluation, and we encourage clients to request full imagery and report documentation to accompany this sapphire. For a collector seeking a naturally asteristic, untreated Ceylon blue sapphire with strong star definition and an exceptional combination of color and clarity, this stone is a rare and compelling opportunity.