0.71 Ct. Blue Sapphire from Tanzania

This transparent 0.71 carat oval blue sapphire measures 5.10 by 4.35 by 3.66 mm and exemplifies precision cutting and natural material integrity. The stone is faceted in a mixed brilliant configuration that combines a faceted crown with a brilliant style and a structured pavilion to optimize light return and scintillation for a gem of this modest table size. Color intensity is classified as intense, producing a saturated pure blue that remains consistent across the table and crown facets. Clarity has been graded included at eye level, with natural internal features that are characteristic of untreated sapphires from Tanzania, and the gem has received no enhancement. The polish is excellent, with crisp facet junctions and uniform facet planes that maximize contrast and deliver clean, highly reflective facet windows. The proportions, including crown and pavilion geometry tuned to the oval outline, were selected to balance depth and spread, preserving face up color while enabling lively brilliance for viewing from multiple angles.

The flawless aspects of the finishing work elevate the stone, as the precision of facet placement and the excellent polish produce seamless light behavior that enhances perceived purity and color saturation. From the table silhouette to the pavilion facets, every surface has been finished to reduce surface disturbance, so that light is returned with minimal diffusion, creating a sharp, dynamic pattern of flashes and a broad, velvety blue field when viewed face up. The presence of internal inclusions contributes to the gem story without detracting from optical performance, and careful orientation in a bezel or prong setting can further minimize their visibility while showcasing the intense Tanzanian blue. As a natural, untreated sapphire from a reputable source, this gem reflects The Natural Sapphire Company commitment to selecting and finishing material that combines geological authenticity with lapidary excellence, making it suitable for a high quality bespoke setting where craftsmanship and natural character are equally valued.