0.78 Ct. Greenish Blue Sapphire from Ceylon (Sri Lanka)

This listing presents one transparent 0.78 carat emerald cut greenish blue sapphire with exact dimensions of 5.94 by 4.39 by 3.10 mm. The gem is cut in a classic emerald shape, featuring broad step facets that emphasize color zoning and provide a refined, architectural appearance. Clarity is graded as slightly included when evaluated at eye level, indicating the presence of minor internal features that are visible to careful inspection but that do not dominate the gem or obscure its overall transparency. Color is described as intense, and the stone displays a balanced greenish blue tone that is characteristic of fine Ceylon sapphires. The polish has been evaluated as excellent, contributing to crisp facet junctions and clean light return. Enhancement status is none, the sapphire has not been heat treated or subjected to other laboratory enhancements, and the origin is Ceylon, Sri Lanka, a source noted for producing lively blue and blue green sapphires with a distinct vibrancy.

The emerald cut of this sapphire influences both its visual performance and its practical considerations in jewelry design. Step facets create broad planes of color, which accentuate the stone s body tone and saturation, and they can reveal internal features in a manner that is distinct from brilliant cut styles. With a slightly included clarity grade, inclusions are present but contained, and they often serve as natural identifiers that confirm the gem s natural origin and lack of enhancement. The excellent polish supports a clean, modern presentation and enhances the gem s ability to display its intense color under a range of lighting conditions. The measured proportions, with a slender profile and controlled depth, make this sapphire well suited for a variety of settings including solitaire rings, understated pendants, and pairings with tapered baguette accent stones, depending on the desired design intent and the setting designer s approach to securing the stone.

Durability is a central consideration for any fine sapphire, and this stone rates nine on the Mohs scale of mineral hardness, where diamond is rated ten. A Mohs hardness of nine places corundum family gems, including this sapphire, among the hardest naturally occurring gemstones suitable for everyday wear. Compared with more commonly encountered gem materials, the sapphire is significantly more resistant to scratching than quartz at seven and topaz at eight, and it is appreciably harder than many popular colored gems such as emerald which typically ranges between seven and eight. This relative hardness means the sapphire will retain crisp facets and resist surface abrasion in daily use, reducing the frequency of professional repolishing. Hardness alone does not eliminate risk, as corundum can fracture under sufficiently sharp impact, and this particular stone s slight inclusions may require design consideration to avoid excessive stress on localized planes. For daily wear designs, protective settings such as bezels or secure prongs combined with mindful placement can maximize longevity while preserving the sapphire s appearance.

Care and handling recommendations reflect the stone s natural origin and its untreated status, along with its clarity and cut characteristics. Routine cleaning with warm soapy water and a soft brush is effective and safe for maintaining surface luster, and professional checks of the setting are advisable to confirm secure mounting, especially for ring applications. Ultrasonic and steam cleaners are commonly used for many gem types, but given the presence of slight inclusions and the absence of enhancement, we recommend caution with aggressive cleaning methods and a conservative approach until a jeweler familiar with this specific stone has examined it in its finished setting. When considering setting options, The Natural Sapphire Company recommends designs that protect the girdle and corners, as the emerald cut presents corner facets that can be vulnerable to direct knocks if left overly exposed. This sapphire s combination of intense Ceylon color, excellent polish, transparent body, and solid Mohs nine hardness make it a durable and visually distinct choice for a variety of fine jewelry applications, and its untreated provenance offers collectors and designers a natural and authentic character to integrate into bespoke creations.