0.90 Ct. Greenish Blue Sapphire from Madagascar

This is a beautifully transparent 0.90 carat oval greenish blue sapphire, measuring 5.90 x 4.27 x 3.84 mm, expertly cut in a mixed brilliant style to balance sparkle and depth. The stone carries an intense color intensity with a distinctive greenish blue hue that is both lively and refined. Clarity is graded very slightly included at eye level, which means the sapphire reads as essentially eye clean to most observers, with only minor internal features that do not detract from its overall transparency or visual appeal. The polish is excellent, producing crisp facet junctions and smooth reflective surfaces that enhance both brilliance and light return. Importantly, this sapphire has no enhancement, and its origin is Madagascar, a source known for producing vividly colored, natural corundum. For the educated buyer, the combination of an unenhanced origin, intense color saturation, and a careful mixed brilliant cut makes this gem a rare and desirable example of natural sapphire material, suitable for investment quality and bespoke jewelry applications.

Under different lighting conditions this sapphire displays an appealing range of visual behaviors due to its color and cut. In bright daylight the stone tends to show its truest greenish blue, with a cool blue core and subtle green modifiers at the pavilion and crown edges, creating a slightly tropical teal character in direct northern light. Under warm incandescent or halogen lighting the sapphire will emphasize its blue component while bringing forward deeper teal flashes, producing a rich and velvety appearance that reads as more blue than green. Under modern LED or cool fluorescent light the mixed brilliant cut maximizes scintillation, with rapid flash and return from the crown facets, making the stone appear lively and brilliant even in office or indoor environments. In low light or candlelight the intense color maintains depth, and the stone will present concentrated flashes of rich blue with green undertones, giving the gem a jewel like presence without relying on surface reflection alone. The mixed brilliant cut has been chosen to preserve weight and depth, while still delivering strong face up brightness, so the stone balances lively surface sparkle with a deep, saturated body color.

From a value and practical perspective this 0.90 carat sapphire from Madagascar represents a compelling purchase for informed collectors and designers. Natural, unenhanced sapphires with intense color are less common than heat treated material, and the absence of enhancement increases both rarity and long term desirability. The very slightly included clarity grade indicates good durability for everyday wear, supported by the inherent toughness of corundum at nine on the Mohs hardness scale, and the excellent polish contributes to superior optical performance when set. For jewelry design the oval shape and measured proportions make the stone versatile, working beautifully as a solitaire ring center, a delicate pendant, or as the focal point in a bespoke three stone composition. Metals can be chosen to enhance either the blue or green character, with white metals bringing out the cool blue facets, and warmer yellow metals accentuating the greenish nuances for a vintage inspired look. The Natural Sapphire Company can provide further information about provenance and matching options, and we can assist with professional mounting and recommendations to ensure the stone performs optimally in the intended setting, and to preserve its natural and untreated beauty for generations.