6.99 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 6.99 carat emerald cut blue sapphire from Ceylon Sri Lanka offers a technically sophisticated combination of dimensions, cutting style, and eye clean clarity that will appeal to connoisseurs. Precisely measured at 13.26 by 10.22 by 4.68 millimeters, the stone displays the defining geometry of an emerald cut with a large, flat table, truncated corners, and a series of parallel step facets on both crown and pavilion that create broad planes for color transmission rather than scintillation. The cutter has prioritized color stability and surface reflection, evident in the even facet alignment and a polish graded excellent, which yields crisp facet junctions and mirror like facet surfaces. Clarity is described as very slightly included when evaluated at eye level, meaning that inclusions are minimal and do not materially interrupt the plane of color or the clean visual block effect characteristic of quality step cuts. The stone has been heat treated, a stable and widely accepted enhancement for sapphire that deepens and unifies the blue hue while preserving the integrity of the crystal structure. Offered by The Natural Sapphire Company, this gem has been evaluated with attention to facet symmetry, table to depth relationships, and pavilion balance to ensure the emerald cut reads as a single, saturated blue plane when set.

Color engineering and light performance are central to the appeal of this sapphire, and the combination of dark color intensity and step facet architecture produces a dense, velvety blue surface that reads consistently across viewing angles. The emerald cut reduces the number of small reflective facets in favor of larger facet planes, which emphasizes hue and tone rather than dispersed fire. For this stone, the dark intensity creates a profound saturation that masks minor internal features, making the clarity grade of very slightly included an excellent match for the cut. Observers will note restrained pleochroic effects, with the dominant blue maintained under varied lighting conditions, and the balanced crown angles contribute to a controlled return of light that highlights the stone s body color rather than creating contrasty brightness. The polish being excellent ensures that facet reflections are clean and unfractured, an important consideration with step cuts where each facet plane communicates the gem s color and clarity. The origin of Ceylon Sri Lanka is consistent with the sapphire s tonal character, and the heat treatment applied has been conducted to industry standards to enhance saturation without introducing unstable residues or surface altering fills.

Durability assessment and practical mounting guidance are important for buyers who plan to wear this sapphire regularly, and the material properties of corundum make it one of the most robust choices for daily jewelry. Sapphire ranks nine on the Mohs hardness scale, second only to diamond at ten, which means it resists abrasion and surface wear far better than common gem materials such as quartz which measures seven. Despite high hardness, sapphires can be susceptible to chipping at acute facet junctions and at corners, a risk that is most relevant for emerald cuts because of their extended corners and large tables. For long term protection we recommend settings that support the girdle and corners, such as protective bezels or low profile four or eight prong baskets with secure corner protection, and we advise clients to avoid high impact activities while wearing the stone. Cleaning can be carried out with warm soapy water and a soft brush, and heat treated sapphires are generally safe for ultrasonic cleaning though we recommend a professional assessment if there is concern about internal features. As presented by The Natural Sapphire Company, this 6.99 carat Ceylon emerald cut sapphire represents a technical proposition for buyers who prioritize exacting faceting, strong color saturation, and lasting durability, and it is particularly well suited to projects where the gem s controlled, elegant color field can be showcased in a protective, high quality mounting.