Solitaire Bluish Green Sapphire Ring 4.70 Ct., 18K White & Yellow

This oval bluish green sapphire weighs 4.70 carats, and measures 11.34 x 9.10 x 5.58 mm, and originates from East Africa. The hue presents as a delicate bluish green with light color saturation, and the transparency is notable despite a clarity grade of slightly included when evaluated at eye level. The cutter preserved a clean outlined oval silhouette, and the mixed brilliant cut was selected to balance spread with optical performance. The table plane and overall crown proportions were calibrated to the stone dimensions to avoid windowing, and the depth of 5.58 mm provides sufficient pavilion volume to channel light back through the crown. The excellent polish enhances facet junction definition across the crown and pavilion facets, and the result is a stone that reads larger than its carat weight suggests, while maintaining controlled color distribution and strong apparent brightness.

The mixed brilliant cut employed here exploits the complementary strengths of brilliant style facet geometry and calibrated pavilion facetting, to maximize both light return and scintillation. On the crown, a network of kite and triangular facets disperses incoming light into lively flashes, while carefully proportioned crown height preserves play of light without sacrificing saturation. The pavilion is configured as a modified brilliant arrangement, with additional pavilion facets and adjusted facet angles that reduce excess leakage through the girdle, and concentrate internal reflection toward the crown. The oval outline introduces a length to width ratio that elongates the appearance, and the facet alignment along the long axis is optimized to avoid broad dark areas, producing a balanced pattern of contrast and white light return. The overall facet architecture was executed to emphasize return of white light for brilliance, and controlled dispersion for subtle color sparkle, resulting in an interplay of broad light windows and pinpoint scintillation that reads dynamic in both direct and diffuse lighting.

Clarity management and polishing were integral to the cutter strategy, and the stone exhibits slightly included clarity at loupe and eye level that does not materially interfere with light performance. Inclusion positions were considered when orienting the pavilion and crown, and the cutter oriented facet planes to mask or channel inclusions away from primary light paths, preserving a clear central brightness. The excellent polish quality minimizes light scattering at facet junctions, increasing total internal reflection, and the sharp facet edges maintain crisp contrast facets that enhance scintillation. Light color saturation in this sapphire benefits from precise facet placement, the cutter optimized crown height and pavilion angles to concentrate color where desirable, while avoiding darkening that reduces apparent brilliance. The mixed brilliant approach also allows for a larger table to present the gem with broad face up brightness, while the surrounding faceting creates lively contrast and a three dimensional appearance, ensuring that the stone displays both depth and surface fire under varied lighting conditions.

The mounting for this sapphire is engineered to support optical performance, the head and prong work are rendered in 18K white gold, and the band and gallery are executed in 18K yellow gold. The use of 18K white gold for the head minimizes color casting from the metal near the crown and pavilion, and the reflective white metal complements the gem by returning neutral light into the crown facets. The four prong configuration secures the oval girdle with minimal coverage of the crown, allowing unobstructed entry of light from oblique angles, and the prong seats are shaped to lift the stone slightly for increased light intake from the pavilion and side planes. The 18K yellow gold band provides a warm contrast to the bluish green tone, and the combination of white gold prongs and yellow gold shank creates a tailored visual field that highlights the stone without overpowering its subtle saturation. At The Natural Sapphire Company we focus on gem first design, and this ring exemplifies that philosophy by pairing a technically considered mixed brilliant oval sapphire with a dual tone 18K gold setting, to maximize brilliance, maintain structural integrity, and present a refined, wearable profile that emphasizes optical performance.