1.12 Ct. Bi Color / Parti Sapphire from Ceylon (Sri Lanka)

This transparent marquise shape sapphire weighs 1.12 carat, and measures 8.60 by 4.78 by 3.85 mm. The cutting style is faceted, executed as a mixed brilliant cut that combines step and brilliant elements to balance light performance across the elongated form. The stone exhibits a bi color and parti character, with areas of yellow and near colorless tones that are spatially distinct yet harmonious across the table and pavilion. Clarity is graded as very very slightly included when evaluated at eye level, indicating only minor internal features that do not materially affect transparency or brilliance. Color intensity is medium, and polish is rated excellent, both factors that contribute to consistent light return and surface durability. The sapphire has been heat treated, a common and stable enhancement for sapphires, and originates from Ceylon Sri Lanka, a region with a long and well documented history of producing high quality corundum material.

Optical and physical proportions make this specimen well suited to jewelry that emphasizes length and directional flash. The marquise outline, with its pointed termini and gently curved sides, directs light along the axis of the gem, producing a distinct linear scintillation pattern when set face up. The mixed brilliant facet schema increases fire and scintillation within the center, while the step facets toward the girdle preserve color and depth along the edges. At 8.60 mm in length and a length to width ratio near 1.80, the stone offers an elegant elongated presence that balances finger coverage with wearability. The bi color distribution can be used intentionally in a setting to position the warmer yellow portion as a focal area, or to create a dynamic appearance that changes as the wearer moves, enhancing personal interaction with the piece over time.

Durability and provenance are key attributes in determining a piece suitable for multi generational transfer. As a corundum family gemstone, sapphire rates nine on the Mohs hardness scale, providing strong resistance to abrasion and surface wear under normal daily use. The excellent polish and the very very slightly included clarity grade reduce the likelihood of early surface fatigue and make the stone amenable to a variety of secure mounting styles including low prong, bezel, or bezel hybrid settings, each offering differing balances of protection and light exposure. The documented origin from Ceylon Sri Lanka adds a verifiable provenance layer, which can be recorded along with purchase and treatment details to form part of the object history that often accompanies heirloom pieces. Heat treatment in sapphire is a widely accepted practice that improves color and clarity stability, and when disclosed and documented, it supports long term value preservation.

For a gemstone to function as a generational heirloom, technical quality must be paired with considered setting choices and custodial practices. This sapphire is of a size and clarity that facilitates a timeless setting in precious metal, where traditional designs favoring understated lines will allow the stone to be reset in future eras without altering its intrinsic appeal. Routine maintenance such as periodic professional inspections, gentle cleaning with warm water and mild detergent when necessary, and avoidance of harsh chemicals will preserve finish and polish. Maintaining provenance documentation, treatment disclosure, and any appraisal records will preserve both monetary and historical value. The Natural Sapphire Company can provide guidance on appropriate mounting methods, documentation for provenance and treatment, and recommendations for long term care, enabling this marquise bi color sapphire to be retained in family collections and passed to subsequent generations as an enduring, verifiable, and wearable heirloom.