0.70 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This pear shape blue sapphire from Ceylon Sri Lanka presents a refined combination of proportion and polish, weight, and optical clarity. The stone weighs 0.70 carat, and measures 9.21 x 4.18 x 2.41 mm, offering an elongated silhouette that is well suited to solitaire rings and drop pendants. Cut as a mixed brilliant, the pavilion and crown facet arrangement is designed to combine the scintillation of a brilliant style with the depth and color display of step elements. The sapphire is transparent, with a clarity grade of very very slightly included when evaluated at eye level, and an excellent polish that enhances surface brightness and minimizes light loss. The color intensity is light, providing a cool, elegant blue that reads as delicately saturated in small to medium sized settings. The stone has been heat treated, a stable and widely accepted enhancement, and it is offered through The Natural Sapphire Company with full disclosure of origin and treatment.

When comparing brilliance to more common gemstones, it is useful to consider refractive properties and how cut and clarity interact with color. Blue sapphire has a refractive index in the region of 1.76, higher than aquamarine and topaz, and lower than diamond. This intermediate refractive index allows this Ceylon sapphire to return light with a lively, glassy brilliance that is distinct from the fiery dispersion of diamond. Diamond exhibits greater fire due to its higher dispersion, and it will typically show more spectral flashes in mixed lighting. By contrast this sapphire emphasizes clean flashes of light and broad reflections that complement its blue hue, rather than breaking light into intense colored fire. Compared with commonly encountered gems such as aquamarine and citrine, which are lighter in refractivity, this sapphire produces crisper facet edges and a more immediate sense of liveliness. The mixed brilliant cut chosen for this pear shaped stone maximizes return of light through the crown while preserving color saturation through the pavilion, so the overall face up appearance is bright and evenly balanced. The very very slightly included clarity ensures minimal internal interruptions to light transmission, favoring scintillation and maintaining a clear, open window to the stone core.

What makes this sapphire stand out in a market of familiar gems is the combination of origin, cut, and visual character. Sapphires from Ceylon Sri Lanka are prized for their often silky, pure blue tones, and this example offers a lighter intensity that reads versatile and wearable, while still retaining that distinctive Ceylon character. The pear shape provides an elegant elongation on the finger, and the mixed brilliant facet architecture translates the stone transparency and VVS clarity into steady, refined brilliance without competing optical effects. Heat treatment in this case enhances color uniformity and clarity, executed in a manner consistent with industry practice to produce a stable, lasting result. For customers seeking a gemstone that balances color, clarity, and optical performance, this 0.70 carat Ceylon blue sapphire represents a measured choice, and The Natural Sapphire Company is prepared to provide additional images, measurements, and setting recommendations to assist with selection and design.