1.00 Ct. Bluish Green Sapphire from Tanzania

This gemstone is a transparent, one point zero zero carat cushion shape sapphire from Tanzania, with precise dimensions of 5.74 x 5.08 x 3.88 mm. It is a bluish green sapphire with intense color intensity and an excellent polish. The cutter chose a mixed brilliant cut to balance facet brilliance and color saturation, resulting in lively light return and a pleasing table view. Clarity is graded as slightly included when evaluated at eye level, which means that under close visual inspection discerning observers will note small natural inclusions that do not detract from the gem overall. Importantly, this sapphire has undergone no enhancement, making it a wholly natural, untreated corundum, and its origin in Tanzania contributes to both its character and market interest. At The Natural Sapphire Company we present this gem with full transparency about its measurements, cut, clarity, color intensity, polish, treatment status, and origin, so an educated buyer can assess value with confidence.

From a gem grading perspective the combination of properties here is noteworthy. The cushion shape offers a soft, classic silhouette while the mixed brilliant cut introduces numerous small facets on the crown that increase scintillation, and larger pavilion facets that deepen and distribute the bluish green tone. Slightly included clarity evaluated at eye level indicates that inclusions are present but not dominant, and they often serve to confirm natural origin and identify the crystal growth characteristics of corundum. The excellent polish enhances light transmission across the facets and reduces surface abrasion, which in turn accentuates the intense color intensity. For many collectors and connoisseurs intense natural saturation without thermal enhancement is more desirable than a less strongly colored stone that has been altered. The millimeter measurements reflect a well proportioned profile, with a depth that supports both strong color and adequate brilliance, and the one carat weight is considered an attractive size for both single stone settings and complementary designs.

The story of this sapphire from mine to market exemplifies careful stewardship at every step. It began as rough corundum in Tanzanian alluvial or primary deposits where local miners extract sapphire material from host rock and river gravels. The rough was selected for its promising hue and transparency, then shipped to skilled cutters who evaluated each piece under standardized lighting to determine the optimum shape and facet pattern that would retain weight while maximizing color and light performance. The decision to use a cushion shape with a mixed brilliant faceting pattern was driven by the rough shape and by the objective of bringing out the bluish green character without over faceting away carat weight. After preforming and faceting, the stone received meticulous polishing on each facet to achieve the excellent polish grade and to ensure that the table facet and crown facets work in concert with the pavilion to produce strong face up color. The stone was inspected by experienced gemologists who assigned the slightly included clarity grade at eye level and confirmed that no heat or other enhancements had been applied. Finally the gem entered the inventory of The Natural Sapphire Company, where it is presented with full disclosure and photographic documentation, ready for a buyer who appreciates a natural, unheated piece with a traceable background.

For the educated buyer this sapphire offers several compelling attributes. Natural, unenhanced sapphires in bluish green hues and with intense saturation are less common than typical blue or pink material, and the combination of one carat size, cushion shape, mixed brilliant cut, and excellent polish creates a stone that functions beautifully in jewelry while still retaining appeal for collectors. Slightly included clarity at eye level is consistent with natural corundum and does not materially reduce durability, as sapphire rates nine on the Mohs hardness scale, making it suitable for daily wear in rings or pendants when properly set. The Tanzanian origin provides provenance interest, as that region is known for producing a broad spectrum of sapphire colors, and the untreated status enhances long term value perception for many investors. At The Natural Sapphire Company we emphasize transparency, so we will provide detailed images and measurement information to assist in setting selection. This sapphire is particularly well suited to a bezel or four prong setting that protects the corners of the cushion shape while allowing the stone to face up with maximum color and light performance. Regular gentle cleaning and periodic professional inspection will preserve the excellent polish and overall beauty of the gem.

In summary, this one point zero zero carat, 5.74 x 5.08 x 3.88 mm, cushion shaped bluish green sapphire from Tanzania represents a thoughtful balance of natural character and lapidary skill. Its mixed brilliant cut maximizes scintillation while preserving color depth, its slightly included clarity confirmed at eye level attests to natural origin, and its excellent polish highlights optical features without recourse to enhancement. For a buyer seeking an ethically sourced, untreated sapphire that combines wearable size with collector appeal, this stone is a strong candidate. The Natural Sapphire Company stands behind the description and welcomes inquiries from clients who would like further optical data, magnified inclusion images, or guidance on bespoke setting options tailored to preserve and showcase the unique attributes of this gem.