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

One transparent 1.20 carat round bi color parti sapphire from Ceylon, Sri Lanka is presented with precise dimensions of 6.39 by 6.34 by 3.60 millimeters, embodying a balance between weight and face up size that is well suited for a statement piece. The cutting style is faceted, executed as a mixed brilliant cut, and the stone displays a medium color intensity that shifts between blue and lighter bluish violet tones depending on orientation and lighting. The clarity grade is very very slightly included when evaluated at eye level, a level of internal perfection that allows for clean light transmission and a commanding visual presence at one carat plus. The excellent polish and careful facet junctions enhance the face up brilliance and permit both strong flashes of light and finely resolved scintillation, attributes that are prized by collectors and jewellery designers who prioritize optical performance in a focal gemstone. This sapphire sits within proportion ranges that favor both durability in a variety of settings and maximum optical return, making the piece an immediate candidate for use as the central gem in a high impact design.

The mixed brilliant faceting strategy employed on this sapphire leverages a brilliant style crown combined with a pavilion that has been modified to balance color and light performance, a technique often used to optimize parti color distribution without sacrificing brilliance. The crown facets are scaled to provide an expansive table area that admits light efficiently into the pavilion, while the pavilion facet configuration returns that light in both broad white flashes and concentrated colored flashes, enhancing the stone s visual liveliness. Because the material displays bi color characteristics, the cutter has oriented the pavilion and crown to moderate color zoning and to promote attractive color separation under different viewing angles. This approach preserves the medium saturation of the blue hues while allowing discreet zones of lighter tone to contribute to a dynamic, lively appearance. The result is a sapphire that exhibits controlled windowing, minimal extinction, and a pleasing balance of brightness and color, attributes that experienced buyers will recognize as indicators of thoughtful lapidary design and skilled faceting.

From a clarity and finish perspective the sapphire s very very slightly included grade evaluated at eye level indicates inclusions are minute and located so as not to interrupt the principal light pathways, thereby maintaining high luster and a clean face up presentation. Under loupe inspection inclusions typical to Ceylon sapphires may be present, but their impact on durability and light performance has been minimized by the cutter s decisions regarding facet placement and depth. The excellent polish ensures that facet planes meet at crisp junctions, promoting maximum specular reflection and crisp facet contrast, which together create controlled scintillation. Proportions are central to the gem s statement quality, and the measured dimensions yield an average diameter of 6.365 millimeters and a depth to diameter ratio of approximately 56.6 percent, a range that supports both a generous face up area and a well conserved weight to diameter relationship. These proportions favor traditional mounting techniques while still allowing the gem to perform optically when viewed in solitaire or halo configurations.

This sapphire s combination of size, clarity, and precision cutting makes it particularly well suited for use as a statement centre, where its transparent body and parti color dynamics will draw attention without appearing visually cluttered. At 1.20 carats the stone offers a presence that reads larger than many stones of similar carat weight due to its efficient diameter and polished face up area, and the very very slightly included clarity ensures that the surface appearance remains clean at conversational distances. The heat treated enhancement applied is a standard, stable technique used to improve color uniformity and saturation, and it has been executed without compromising the stone s natural character. The Natural Sapphire Company stands behind the proven provenance of this Ceylon, Sri Lanka material and offers documentation regarding origin and treatment, along with consultation on mounting and design options to optimize the gem s visual impact. For clients seeking a technically refined sapphire with a balance of color complexity, optical performance, and wearable scale, this round bi color parti sapphire is a meticulous choice for a signature piece.