0.38 Ct. Greenish Blue Sapphire from Madagascar

This transparent, greenish blue round sapphire, presented by The Natural Sapphire Company, is a refined example of what collectors and connoisseurs seek when assessing small, but technically excellent gemstones. The stone weighs 0.38 carat, and its dimensions measure 4.21 x 4.16 x 2.94 mm, offering compact proportions that adapt well to a wide range of fine jewelry settings. It is fashioned in a mixed brilliant cut, combining a faceting scheme designed to balance table size with pavilion angles for optimal light return. Clarity is graded as very very slightly included when evaluated at eye level, indicating only minor internal characteristics that do not detract from the stone as seen in ordinary viewing conditions. Color intensity is described as medium light, imparting a fresh, appealing greenish blue hue that can read more blue or more green depending on surrounding metals and lighting. The sapphire is heat treated, which is an accepted and stable enhancement in the trade, and it displays an excellent polish that allows its facets to interact cleanly with light.

The cut and resulting brilliance of this mixed brilliant round are among the stone’s most compelling attributes, and these characteristics make the sapphire a natural centerpiece for a custom engagement ring, a pendant, or an elegant pair of earrings. A mixed brilliant cut employs a combination of small pavilion facets and a crown arrangement intended to maximize scintillation while maintaining a practical table size, which in this specimen supports a lively play of light across the face of the gem. The excellent polish ensures that light passes into and out of the gem with minimal diffusion, so viewers perceive crisp flash and a pleasing overall brightness. For an educated buyer, the interplay between facet geometry and polish quality is critical, because it determines how the stone will perform in real world settings, under both daylight and artificial illumination. This sapphire demonstrates those qualities clearly, returning light in even, well defined reflections rather than dull or scattered flashes.

Clarity is an essential consideration in sapphire evaluation, and the very very slightly included grade of this gem, assessed at eye level, speaks to a high degree of visual purity. In natural sapphires, minute inclusions can consist of tiny crystals, healed fractures, or mineral needles often referred to as silk. In this case, the internal characteristics are sufficiently minor that they do not interrupt the gem’s transparency or its ability to transmit light, which is apparent in the photographs and the gem inspection. For daily wear, sapphires are valued not only for their color and brilliance, but also for their toughness. With a hardness of nine on the Mohs scale, corundum, the mineral family to which sapphires belong, resists scratching far better than many alternative gemstones, making this gem suitable for rings and other pieces that receive frequent exposure. The combination of a high clarity grade and the durable nature of sapphire ensures long term beauty with routine care appropriate for fine jewelry.

The origin and treatment history of a sapphire contribute materially to its market value and to the informed buyer’s understanding of provenance. This sapphire originates from Madagascar, a source that in recent decades has produced a wide spectrum of colors and qualities, and which has become an important supplier of gem quality corundum to the global market. Madagascar’s geology favors the formation of sapphires with attractive, sometimes complex colors, often influenced by trace amounts of iron and titanium, which produce blue tones, and by chromium and other elements that can shift tones toward green. The medium light color intensity of this stone places it within a range that offers versatility in design, allowing it to harmonize with both warm and cool metal choices. Heat treatment is disclosed, and it is important to note that heat treatment is widely accepted in the industry, as it can enhance color uniformity and clarity in a stable and permanent way when performed under controlled conditions. Responsible disclosure of this treatment is part of the transparent approach used by The Natural Sapphire Company.

For an educated buyer considering value and aesthetics, this Madagascar origin, the mixed brilliant cut, the excellent polish, and the very very slightly included clarity grade combine to create a sapphire with notable appeal and practical desirability. At 0.38 carat, this gem is ideal for designs that emphasize precision, symmetry, and optical performance, such as a solitaire setting with a slender bezel, a three stone ring with smaller side accent stones, or a halo that accentuates the center without overpowering its nuanced greenish blue color. From an investment and collection standpoint, well cut, well polished sapphires with clean appearance, natural origin, and appropriate disclosures generally hold appeal to both private collectors and designers. The Natural Sapphire Company stands ready to assist with certification recommendations, bespoke mounting options, and guidance on complementary diamonds and metals, ensuring that the finished piece showcases the stone as a true centerpiece. For buyers who appreciate detailed gemological information, this sapphire offers a balance of technical quality and aesthetic charm that rewards both the eye and informed judgment.