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

From the emerald green paddy fields and ancient alluvial gravels of Ceylon Sri Lanka comes a story written in mineral and light, a story that we at The Natural Sapphire Company are honored to share. Deep under the island soil, corundum crystals formed over millions of years, absorbing trace elements and the history of their surroundings, and in rare instances producing the split personality of a parti or bi color sapphire. This 1.64 carat emerald cut bi color sapphire began its journey as a rough nodular crystal, hidden in a riverbed and altered subtly by heat and pressure. When our experienced Sri Lankan miners found that rough, they knew they had discovered a gem with a natural division of color, a visual conversation between cooler blue and lighter near colorless tones. Sourced with care and documented as Ceylon Sri Lanka origin, this sapphire carries both geological heritage and cultural resonance from a region famed for producing some of the most coveted sapphires in history.

In the hands of master cutters the rough was coaxed into a graceful emerald cut shape, with exact dimensions of 8.51 by 5.12 by 3.12 millimeters and a total weight of 1.64 carats. The cutting style is faceted, chosen deliberately to emphasize the linear color zoning that gives parti sapphires their drama. The gem exhibits medium color intensity, and the interplay between deep blue and lighter, cooler tones is visible across the table and step facets. Clarity is described as very slightly included evaluated at eye level, a natural signature that confirms the stone is not synthetic and that only enhances its individuality. An excellent polish allows light to travel through the stone with minimal surface disruption, ensuring lively reflections and crisp color shifts. The sapphire has been heat treated, a standard and stable enhancement that refines color and clarity without masking its identity or origin.

The Emerald cut was selected to narrate the stone’s internal geography, its long steps and broad table serving as windows into a layered history of color. Faceting was executed to balance the blue and near colorless zones, so that the bicolor effect reads as an intentional, artistic partition rather than a random streak. This deliberate approach frames the gem for multiple design possibilities, from a minimalist bezel that highlights the linear dichotomy to an elegant halo that contrasts the two tones. At 1.64 carats this sapphire is substantial enough to command attention on a finger or pendant, yet refined enough to work in delicate settings. The bi color nature invites bespoke design thinking, where the piece can be oriented to emphasize either the deep blue or the lighter portion, creating wearable versatility that few single tone sapphires can offer.

Beyond its aesthetic appeal this parti sapphire carries investment potential that speaks to rarity and collector demand. Parti sapphires from Ceylon are uncommon, and well cut examples that showcase clean, attractive zoning command interest from collectors and designers who prize distinctiveness. Provenance from Sri Lanka adds a premium in many markets, given the long and venerable history of Ceylon sapphires with gem connoisseurs. The fact that the stone has been heat treated is disclosed clearly, and while treatment typically moderates resale values compared with completely untreated stones, it also enhances the gem’s immediate attractiveness and marketability. Historically, fine sapphires have shown resilience as tangible assets, retaining value over long holding periods and often appreciating when supply is constrained and demand for natural, characterful stones grows. Collectors in recent years have shown a particular appetite for colored stones with strong stories and provenance, and this sapphire’s narrative of origin, craft, and visible bi color personality situates it well in that trajectory, though like all gemstones its future performance cannot be guaranteed.

To preserve value and ensure continued enjoyment, consider a few practical stewardship steps. Have the stone set by an experienced jeweler who can orient the emerald cut to your aesthetic preference while protecting the girdle and corners. Routine cleaning with mild soap and a soft brush will keep the polish brilliant, and avoid harsh chemicals or ultrasonic cleaners if the mounting introduces tension. Keep certification and documentation safely stored, as provenance and treatment disclosure enhance market confidence and liquidity. For long term investors, consider professional appraisal and periodic re documentation to reflect market changes, and think about insurance if the piece is to be worn regularly. At The Natural Sapphire Company we provide full descriptions and sourcing information, and we stand behind the gem with transparent disclosure and service. If you wish to explore this 1.64 carat Ceylon bi color emerald cut sapphire further, we can assist with detailed imagery, design options, and provenance paperwork so that you can both enjoy its beauty now and consider its place in a curated collection for years to come.