0.42 Ct. Yellowish Green Sapphire from Madagascar

This elegant yellowish green sapphire from The Natural Sapphire Company is a well balanced and finely finished gem, weighing 0.42 carat and fashioned in a round shape with exact dimensions of 4.32 x 4.37 x 3.04 mm. The pavilion and crown have been cut in a mixed brilliant style that marries step facets with a faceted crown to optimize scintillation and return of light. The stone reads as transparent to the eye, with a medium intense color intensity that yields a fresh, lively yellow green tone that sits between chartreuse and pale olive depending on lighting. A high quality polish has been applied across the facets, resulting in crisp facet junctions and strong reflection of light which enhances perceived brightness and makes the color appear evenly distributed across the table and bezel areas.

Clarity and treatment characteristics are important considerations for any discerning buyer, and this sapphire carries a clarity grade of very slightly included when evaluated at eye level, which means that inclusions are minor and do not detract from the visual appeal in typical viewing conditions. These minor inclusions can serve as natural fingerprints that confirm origin and natural formation, while allowing for excellent transparency and brilliance. The gem has been heat treated, which is an established and stable enhancement used throughout the trade to improve color uniformity and visual clarity. Heat treatment in sapphires is a permanent enhancement that does not require special aftercare beyond normal wear precautions, and it is widely accepted by laboratories and the market. The origin is Madagascar, a well regarded source for sapphires that produces stones with attractive color ranges and good crystallographic quality, and this provenance contributes to the specimen identity and desirability for collectors and designers.

From a durability perspective this sapphire is exceptionally well suited to daily wear in jewelry. Sapphires rank nine on the Mohs hardness scale, second only to diamond among commonly used gem materials, which makes them highly resistant to scratching from everyday contact with metal keys, glass, and other attenuated abrasives. In addition to hardness, corundum generally displays good toughness and fracture resistance, lowering the risk of accidental chipping when properly set in a secure mounting. For the most durable everyday use a bezel or secure four or six prong setting is recommended to protect the girdle and pavilion from knocks, and routine inspection of the setting by a jeweler will ensure continued security. Cleaning can be routinely accomplished with warm soapy water and a soft brush, and because this stone has been heat treated only, ultrasonic cleaning is typically permitted provided the gem is securely mounted and free of any fracture filling. Avoiding prolonged exposure to strong acids and rapid thermal shocks will preserve the luster and integrity of the stone.

For the educated buyer this yellowish green sapphire represents a rare combination of attributes that confer both aesthetic and practical value. The moderate size of 0.42 carat is suitable for a refined solitaire, a halo ring, accent stones in bespoke designs, or as the colored center for sophisticated jewelry where color and brilliance are prioritized over sheer weight. The medium intense hue is uncommon enough to be distinctive yet versatile enough to pair with yellow gold, white gold, or platinum settings, and the excellent polish and mixed brilliant cut maximize light performance which enhances perceived size and sparkle. The natural origin from Madagascar combined with transparent clarity at eye level and a permanent heat enhancement make this a responsible choice for buyers seeking documented provenance and trade standard treatments. The Natural Sapphire Company stands behind the quality and description of the gem, and our gemological team can provide further details, imagery, and mounting options to help you visualize this stone in a finished piece, ensuring that the final jewelry combines beauty, durability, and long term value.