2.15 Ct. Green Sapphire from Ceylon (Sri Lanka)

One exquisite specimen from The Natural Sapphire Company presents as a transparent, certified green sapphire weighing 2.15 carats, round in shape, with precise dimensions of 6.98 by 6.85 by 5.55 mm, a mixed brilliant cut, a clarity grade of eye clean, evaluated at eye level, intense color intensity, and an excellent polish. This sapphire is notable for being unenhanced, retaining its natural color and structure, and for its documented origin in Ceylon Sri Lanka. For the educated buyer who values both gemological integrity and aesthetic excellence, these concise specifications convey why this stone stands apart, since unenhanced Ceylon material of this size and clarity is both uncommon and desirable.

The geological story of this green sapphire underscores its intrinsic value. Sapphires are crystalline corundum, an aluminum oxide that crystallizes in a trigonal lattice, and the green hue in this example arises from trace iron combined in some cases with chromium and other elements, producing an intense green that remains balanced and lively. Ceylon Sri Lanka has a long history of producing corundum with bright, saturated tones and an appealing vibrancy that is distinct from some other deposits. A Ceylon provenance is meaningful to connoisseurs because it often signifies gemstones that form under specific geological conditions that favor clean crystals and flattering color. The lack of heat or other enhancement on this stone further elevates its appeal, as it preserves the gem in the state nature produced, which is a premium attribute in the eyes of collectors and jewelers looking for authentic material.

Optical performance and sparkle are the result of both the inherent material properties of corundum and the way this particular sapphire has been faceted, and in this piece those factors combine to deliver sparkle that is difficult to match. Corundum has a relatively high refractive index, about 1.762 to 1.770, which means it bends light more strongly than many common gem materials, generating intense brilliance when light returns to the viewer from the polished facets. Its dispersion, or fire, is modest at roughly 0.018, so the play of spectral color is subtle, but when a stone is cut with well proportioned facets the balance of brilliance and scintillation can be extraordinary. This sapphire’s mixed brilliant cut blends a brilliant style crown with a more step influenced pavilion, allowing for a scintillating table reflection combined with lively facet contrast. The excellent polish ensures that facet junctions are crisp and surfaces are smooth, minimizing light loss through scattering and maximizing contrast and return. Additionally, corundum exhibits low birefringence, on the order of 0.008 to 0.010, which reduces doubling effects and helps maintain clear facet outlines at normal viewing distances, an important factor when assessing an eye clean grade.

Clarity and finishing details further amplify the visual and practical value of this sapphire. An eye clean clarity, evaluated at eye level, means the stone shows no inclusions visible to a skilled observer without magnification, which permits unimpeded light travel through the crystal and enhances overall brightness and depth. The excellent polish is a technical achievement that increases mirror like reflections and refines scintillation, making each movement of the stone produce lively flashes of light and color. The round shape is among the most efficient for light performance, and the mixed brilliant faceting maximizes return while adding a nuanced interplay of large bright flashes and smaller scintillating points. For the discerning purchaser, the combination of natural intense color, unenhanced origin, high clarity, precise dimensions, and expert cutting represents both immediate visual pleasure and durable long term value. The Natural Sapphire Company provides provenance and gemological transparency that supports confident acquisition, and this Ceylon green sapphire is an example of the type of material that appeals to collectors, designers, and investors who demand technical excellence and natural authenticity.

Practical considerations complete the assessment for buyers who intend to wear or set this sapphire. Corundum ranks nine on the Mohs scale of hardness, offering excellent resistance to abrasion and making the stone suitable for daily wear in rings and other jewelry, provided normal care is taken. Cleaning with warm soapy water and a soft brush is recommended, avoiding harsh chemical exposure or prolonged ultrasonic cleaning if there is any concern about associated inclusions or settings. The absence of enhancement means that standard mounting and repair procedures can be carried out without concern for altered stability or fading, and the stone will retain its natural characteristics over time. When setting this 2.15 carat round mixed brilliant green sapphire, a skilled jeweler can choose mounting options that protect the girdle and enhance light entry to accentuate sparkle, while provenance and certification from The Natural Sapphire Company provide documentation that supports the gem’s market value and traceability. For an educated buyer seeking a balance of technical merit, aesthetic vigor, and natural integrity, this Ceylon green sapphire offers a compelling proposition.