5.67 Ct. Greenish Blue Sapphire from Madagascar

This item is a C.Dunaigre certified greenish blue sapphire, presented by The Natural Sapphire Company. The stone weighs 5.67 carats, and is fashioned in an emerald cut shape with dimensions of 9.35 by 8.19 by 7.01 millimeters. The sapphire originates from Madagascar, and its provenance is noted on the accompanying report. The gem is transparent, and it has been evaluated as eye clean at eye level. The color is described as greenish blue with vivid intensity, and the gem has received an excellent polish. Enhancement is limited to standard heat treatment, which is disclosed in the certification and on the product documentation.

The color character of this sapphire is notable for its balanced interplay between blue and green tones, producing a refined and versatile hue. Under daylight and diffused indoor lighting the gem shows a vivid saturation that emphasizes the step facets of the emerald cut, while in incandescent lighting the green component can appear slightly more pronounced. The vivid intensity is uniform across the table, with only minimal color zoning when viewed at oblique angles, a trait often associated with Madagascan material. The stone displays clean, controlled saturation, which allows both depth and surface brightness to be appreciated, making the color readable face up in a variety of settings and mounting styles.

Although the gem is eye clean, it is a natural sapphire and like all natural stones it contains internal features that serve as reliable identifiers. Under magnification you will find fine, naturally occurring characteristics such as minute mineral inclusions, subtle growth zoning, and fine negative crystals. These internal signatures are not detracting at normal viewing distances, they are invisible to the unaided eye, yet they provide a unique fingerprint that links the stone to its natural origin and formation. For collectors and connoisseurs these features add to the gem s traceability and character, confirming its natural origins and offering a consistent reference point for future identification and documentation.

The emerald cut is executed to emphasize color and clarity, employing broad step facets and a generous table to present the gem s tone in a calm and refined manner. The cut proportions are well balanced for the stone s dimensions, producing a stable face up presence that reads larger than many stones of similar weight due to efficient pavilion symmetry. The excellent polish contributes to crisp facet junctions and clean light return within the step structure. Heat treatment has been applied in a controlled fashion to improve color saturation, which is a commonly accepted enhancement in the trade. The combination of transparent material, vivid color, and precise cutting makes this sapphire a durable and versatile choice for a wide range of fine jewelry applications. The Natural Sapphire Company stands behind the certificate and the disclosed treatment, and the stone is supplied with the C.Dunaigre report that documents the measurements, weight, clarity grade, origin, and enhancement.