4.45 Ct. Blue Aquamarine from Brazil

This transparent aquamarine presents as a 4.45 carat cushion shape gemstone, with precise dimensions of 11.07 by 10.88 by 6.55 mm. The cutting style is faceted, employing a mixed brilliant cut that balances table size, crown height, and pavilion depth to optimize light return. Clarity has been evaluated as eye clean at typical viewing distance, and color is described as medium intensity within the blue aquamarine range. Surface finishing is graded excellent, and there has been no enhancement to alter color or clarity. The stone originates from Brazil, a region known for producing beryl with stable, attractive blue tones, and the overall measurements yield a depth ratio of approximately 59.7 percent, which supports both visual presence and practical mounting options for a variety of jewelry styles.

The mixed brilliant cut on a cushion outline creates a refined optical performance, with a faceting scheme designed to generate balanced brilliance and scintillation. The crown and pavilion facets work together to return light as both broad flashes and smaller scintillating points, producing an even, lively appearance without excessive contrast that would distract from the gem color. Aquamarine belongs to the beryl family and is characterized by relatively low dispersion, so the visual effect emphasizes cool blue flashes and crisp white sparkle rather than strong spectral fire. The excellent polish ensures that surface reflections are clean and sharp, enhancing apparent transparency and allowing the eye clean clarity to remain unobstructed, so internal features do not interfere with light performance.

Light source and environment influence the perceived color intensity and scintillation of this aquamarine in predictable ways. Under direct daylight, particularly cool midday sunlight, the stone presents as a clear, lively blue with strong contrast between bright table reflections and the deeper pavilion tones, offering the most natural expression of the mineral blue. In diffused daylight or overcast conditions the blue appears softer and more pastel, with a tranquil, watery quality and moderate scintillation. Under warm incandescent or candlelight, the stone exhibits a subtle warming of hue, with the medium blue taking on a gentler, slightly greener or teal nuance, while overall brilliance is reduced and the focus shifts toward depth of color. Modern LED lighting varies with color temperature, and under cool white LED the aquamarine echoes daylight presentation with crisp blue tones and pronounced white sparkle, while warm white LED produces an effect closer to incandescent light. In lower light situations the scintillation becomes more restrained, and the faceting contributes to a subdued twinkling rather than bright flashes. Metallic mounting choices influence perception, with white metals maintaining cool blue clarity and yellow gold adding a modest warmth to the visual tone without obscuring the gem color.

Practical considerations for setting and care reflect the gem properties of this Brazilian aquamarine. The stone is well suited to rings, pendants, and earrings where its size and cushion form provide a substantial visual presence, and the faceting pattern benefits from open settings that allow light to enter the pavilion. Given the eye clean clarity and excellent polish, the gem will display well when set face up, and design choices that reveal the pavilion will maximize depth and internal reflection. As an untreated specimen, its natural color and clarity are stable, and routine cleaning with warm soapy water and a soft brush is recommended to preserve surface brilliance. For provenance and valuation purposes The Natural Gemstone Company provides full documentation of weight, dimensions, origin, and treatment status upon request, supporting informed selection for bespoke or classic settings.