1.76 Ct. Greenish Blue Sapphire from Madagascar

This beautiful transparent greenish blue sapphire weighs 1.76 carats, and it presents as a classic round shape with dimensions measuring 7.38 by 7.32 by 4.31 mm. The gem is faceted in a mixed brilliant cut, combining the scintillation of brilliant facets with the color retention advantages of step facets. Clarity is evaluated as very very slightly included at eye level, translating to an overwhelmingly clean appearance to the naked eye. Color intensity is described as intense, and the polish is excellent, producing crisp facet junctions and lively light return. The sapphire is heat treated, a widely accepted enhancement that stabilizes and improves tone and saturation, and its origin is Madagascar. This item is presented by The Natural Sapphire Company, and it exemplifies the quality and attention to detail that experienced buyers expect from our collection.

The carat weight of 1.76 is one of the most important attributes of this sapphire for both valuation and rarity. Carat weight is a direct measure of material, and larger corundum crystals capable of yielding fine quality stones are significantly less common than smaller material. The market values increased carat weights disproportionately, so a sapphire approaching two carats occupies a distinct and rarer weight tier than one under one and a half carats. In practical terms this means that the price per carat typically steps up as the weight increases, reflecting the scarcity of stones that combine size with desirable color and clarity. For an educated buyer, the message is clear. A 1.76 carat sapphire offers superior presence and versatility for fine jewelry, and it does so without the compromises often seen in larger stones that may sacrifice color or clarity. This particular gem demonstrates excellent weight retention relative to its diameter, a consequence of thoughtful cutting that preserves carat weight while optimizing optical performance.

Beyond raw weight, the proportions and cutting style of this sapphire contribute directly to how that weight reads in the finished gem. The average diameter of this round sapphire is approximately 7.35 mm, and with a depth of 4.31 mm the depth percent is roughly fifty eight point six percent, a proportion that sits comfortably within the range known to balance face up spread with light return for mixed round cuts. A well executed mixed brilliant cut can boost apparent size while maintaining strong brilliance and scintillation, and in this case the cutter has conserved weight while delivering a lively, intense face up color. Specific gravity for corundum is around four point zero, which explains why sapphires of this diameter can register higher carat weights than many other gem species. For buyers accustomed to comparing millimeter dimensions across gem types, the one point seven six carat weight for a seven point three five millimeter round is a sign of substantial and well preserved material. This makes the stone particularly attractive to connoisseurs who value both physical presence and efficient use of the rough.

Color, clarity, and finish are the other pillars that define value for sapphire collectors, and this gem performs strongly across all three. The greenish blue hue offers a distinctive and sophisticated character, where the blue foundation is enlivened by a subtle green modifier that can create unique visual appeal depending on lighting and setting. Madagascar is known for producing sapphires with lively saturation and attractive hues, and heat treatment is a standard, stable enhancement that refines tone without detracting from the stone structure or longevity. The very very slightly included clarity grade at eye level indicates that inclusions are minimal and do not distract from the gem when viewed without magnification, a practical and desirable attribute for everyday wearable jewelry. Excellent polish ensures that the mixed facets interplay cleanly, maximizing scintillation and maintaining crisp facet planes that enhance both color and brilliance. Taken together these characteristics mean the stone looks vibrant and clean to the eye, and its finish and cutting amplify the value conferred by the carat weight.

From a practical perspective the hardness of corundum ranks nine on the Mohs scale, making this sapphire well suited for rings and other daily wear pieces when mounted with proper protection. The one point seven six carat weight gives the gem a commanding face up presence that works well as a solitaire center, as the focal stone in a cluster, or as a refined accent in a bespoke design. For buyers focused on investment quality, provenance and treatment disclosure are essential, and The Natural Sapphire Company provides detailed gemological information and images to support confident acquisition. The combination of near two carat weight, intense greenish blue color, eye level clarity, balanced proportions, and excellent polish is a compelling package for the educated purchaser who values rarity, science based grading, and enduring beauty. If you would like further information about certification options, setting recommendations to emphasize color and weight, or high resolution imagery and light performance videos, The Natural Sapphire Company can assist so you can evaluate this sapphire with the same rigor used by professional gemologists.