0.42 Ct. Greenish Blue Sapphire from Madagascar

This 0.42 carat round shape greenish blue sapphire is a refined and versatile gem that makes an excellent addition to a high end collection, offered by The Natural Sapphire Company. The stone measures 4.45 by 4.42 by 2.88 mm, it is transparent, and it is faceted in a mixed brilliant cut that balances scintillation and table transparency. The medium intense color intensity gives the sapphire a pleasing presence that reads as lively and elegant in a range of light sources, while the excellent polish ensures that the facets deliver crisp reflections and a clean surface finish. For collectors who prioritize both aesthetic presence and wearable size, this sapphire represents a well judged balance between visual impact and practical use in a variety of settings.

Color is one of the primary determinants of value in sapphires, and this greenish blue example shows a medium intense saturation that is desirable to educated buyers who value nuanced color. The term greenish blue describes a hue that sits on the blue green axis within the corundum family, providing a cool yet slightly verdant character that can appear more blue in daylight and slightly greener under incandescent lighting. The medium intensity means the color is strong enough to be clearly perceptible, but not so dark as to reduce brilliance, which allows the mixed brilliant cut to maximize light return. Madagascar is a noted source for sapphires with fresh, appealing blue and greenish blue tones, and provenance from that island is often associated with stones that combine interesting color and good clarity, characteristics that appeal to collectors seeking both beauty and geological interest.

Clarity and cut are equally important for a collector assessing this gem, and this sapphire carries a clarity grade of very very slightly included when evaluated at eye level, which corresponds to an inclusion profile that is minimal and does not detract from the overall beauty to the unaided eye. Typical inclusions in sapphires can include crystals, needles, or small feathers, but a VVS designation at eye level indicates that any such features are minor and likely to be visible only under magnification or when viewing from specific orientations. The mixed brilliant cut is an excellent choice for a round shape this size, as it combines the sparkle of brilliant facets on the crown with carefully managed pavilion faceting to preserve face up color and depth. The dimensions and proportions, combined with an excellent polish, produce a transparent gem with good light performance and an attractive table presentation, attributes that are particularly important to collectors who wish to display stones loose or set them in refined jewelry.

This sapphire has been heat treated, which is a commonly accepted and permanent enhancement used to improve color and clarity in corundum, and full disclosure of treatment is standard practice in professional trade. Heat treatment for sapphires from Madagascar is widespread and stable, it does not require special care beyond normal jewelry maintenance, and it is an enhancement that knowledgeable buyers expect and accept when fully disclosed. Origin from Madagascar adds a layer of provenance that many collectors appreciate, as the island has been a significant source of gem quality sapphires and is known for producing material with attractive tones and clean crystal structure. For those assembling a high end collection, this gem offers the virtues of a pleasing greenish blue hue, transparent body, strong polish, and a minimal inclusion profile, all supported by trusted disclosure from The Natural Sapphire Company. We recommend that collectors request accompanying documentation and, if desired, an independent gemological report for the most rigorous record keeping, and consider settings that showcase the stone face up to maximize its color and brilliance.