0.56 Ct. Greyish Blue Sapphire from Madagascar

This transparent round sapphire weighs 0.56 carat, and measures 4.94 x 4.96 x 2.90 mm, attributes that together define its presence and practical yield in mounting applications. The small variance between the two diameter measurements indicates a well centered round outline, and the depth to average diameter ratio is approximately 58.6 percent, a proportion that favors balanced light performance for a mixed brilliant profile. The gem presents a greyish blue tone with very light color intensity, an aesthetic that reads as delicate and cool in most lighting conditions, and that allows the stone to pair elegantly with warm or cool metal palettes. The clarity grade is very slightly included when evaluated at eye level, a practical clarity class for sapphires in this size range, and the polish is excellent, providing a smooth facet surface that enhances overall brilliance and minimizes light leakage.

The cutting style is a mixed brilliant, a deliberate choice to optimize optical return and face up appearance for this particular rough. The mixed approach typically combines a full brilliant style on the crown with a more modified pavilion arrangement, resulting in a controlled scintillation pattern and stable dispersion without overemphasizing table flash. For this sapphire the cutter has prioritized symmetry and facet junction integrity, evident in even facet sizing and uniform girdle alignment, which supports consistent reflections across the crown and pavilion. The crown and pavilion interactions are tuned to the gem s internal refractive characteristics, yielding crisp facet contrast despite the stone s modest size, and the depth proportion contributes to a concentrated center glow while preserving edge brightness. These faceting decisions are especially relevant for buyers who consider cut quality a primary determinant of visual performance, because a mixed brilliant executed with precision will often outperform a poorly cut pure brilliant of similar weight.

Heat treatment is noted, a standard and stable enhancement for blue sapphires that is widely accepted within the trade, and in this instance it has been applied to refine the hue and slightly improve overall transparency without compromising durability. Heat treatment in sapphires predominantly affects the distribution of iron and titanium driven color centers, and when applied under controlled conditions it produces uniform and permanent results. Buyers who are technically minded will appreciate that this treatment does not obscure the gem s internal growth characteristics, which remain useful for origin determination and for assessing natural crystal habit. The origin is Madagascar, a source that has become increasingly important for the modern sapphire market, because Madagascar produces a broad range of blue sapphire material from both primary pegmatitic environments and rich alluvial deposits. Madagascar s geological environment imparts characteristic color ranges and inclusion types, and the market recognizes Malagasy origin for producing fine pastel to medium saturated blues, including steel and greyish blue tones that are prized for their subtlety and versatility.

Provenance from Madagascar adds value in multiple ways, it provides traceability that appeals to collectors and to buyers who prioritize responsible sourcing, it situates the gem within a well documented gemological context that supports accurate representation, and it often signals a supply profile that includes both distinctive color varieties and consistent material flow into the trade. The Natural Sapphire Company provides this stone with full disclosure of weight, dimensions, cut type, clarity grade, color intensity, polish condition, treatment, and origin, information that enables an informed decision based on technical merit rather than solely visual appeal. For setting considerations this 0.56 carat round mixed brilliant is practical for delicate engagement rings, for halo center pairings, or as a refined accent in multi stone designs, and the combination of excellent polish and balanced proportions ensures predictable optical performance in low to medium profile settings. Collectors and designers who value measured specification, craftsmanship, and traceable origin will find this Madagascar greyish blue sapphire to be a technically interesting and aesthetically restrained choice.