1.15 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This is a beautifully transparent 1.15 carat blue sapphire, cut to a trillion shape with precise proportions that measure approximately 6.30 by 5.99 by 3.90 millimeters, a profile that combines visual presence with comfortable wearability. The stone displays an intense color intensity that leans into the classic Ceylon blue that collectors and connoisseurs prize, and the excellent polish enhances its faceted brilliance so that each table and bezel facet returns vivid flashes of blue. Clarity is graded as slightly included when evaluated at eye level, meaning that the sapphire presents minor internal features that do not significantly distract from its overall beauty or transparency, particularly once set. This sapphire has been heat treated, a common and widely accepted enhancement method that stabilizes and intensifies color without compromising the gem’s structural integrity. Sourced from Ceylon Sri Lanka, this sapphire carries a provenance associated with some of the most desirable sapphires on the market, and The Natural Sapphire Company is pleased to present it with full disclosure of its characteristics and treatments.

The 1.15 carat weight is an especially important attribute for educated buyers, because carat weight is one of the most direct drivers of a sapphire’s market value and rarity, and a stone in the one carat plus range occupies a sweet spot that balances rarity, presence, and versatility. As carat weight increases, the price per carat typically escalates nonlinearly, because larger rough is rarer and because larger transparent material free of significant color zoning or heavy inclusions is much less common. A 1.15 carat sapphire therefore commands a premium relative to smaller, more common sizes, while remaining practical for many types of jewelry settings, from delicate three stone rings to more expressive solitaire designs. The trillion cut further maximizes the stone’s face up appearance, distributing weight into a broad table area and strong crown facets that enhance apparent diameter and deliver excellent light return, so that a 1.15 carat trillion sapphire often looks larger on the finger than other cuts of similar weight.

Clarity and color work together to determine perceived value, and this sapphire’s slightly included clarity evaluated at eye level indicates that while microscopic inclusions or internal characteristics exist, they do not detract from the gem’s overall visual appeal, especially under normal viewing conditions. Inclusions in sapphires can also serve as fingerprints of natural origin, and minor internal features are often preferable to heavily treated alternatives that mask or eliminate natural structures. The intense color intensity in this sapphire is a central contributor to its desirability, and the hue, tone, and saturation are consistent with high quality Ceylon material that is favored for its lively, vivid blue that remains neither too dark nor too light. Heat treatment, disclosed and stable, is the standard method used to bring out the best color and clarity without introducing artificial substances, and when performed correctly it enhances both beauty and long term stability. The excellent polish and careful cutting work by the lapidary ensure that light is managed effectively across the facets, producing crisp reflections and a scintillating face up appearance that will remain attractive once the stone is set.

For the educated buyer considering both aesthetic and investment factors, this 1.15 carat trillion sapphire from Ceylon is an appealing acquisition that combines rarity, versatility, and documented treatment and origin. The weight places it in a category where supply is more limited, and the combination of intense color and transparent body with slight inclusions produces a stone that is highly wearable while still commanding collector interest. Practical setting recommendations include a low profile three prong or bezel design to protect the pointed corners of the trillion cut, and a white metal or platinum mounting to accentuate the vivid blue, or a warm gold to create a striking contrast that emphasizes saturation. At The Natural Sapphire Company we provide clear disclosures about origin and enhancement, and we can arrange independent gemological documentation if desired, to support valuation and provide additional assurance. Whether you are purchasing for a bespoke engagement piece, to add to a curated collection, or as a considered investment, this sapphire’s balanced combination of 1.15 carat weight, classic Ceylon origin, intense color, and excellent cut make it a meaningful and valuable choice.