15.37 Ct. Aquamarine from Brazil

This 15.37 carat aquamarine presents as a textbook example of precision cutting married to strong natural color, with exact dimensions of 17.98 by 13.23 by 8.98 mm. The stone is fashioned in a classical emerald cut, employing parallel step facets on both the crown and the pavilion, with truncated corners that preserve durability while providing a clean rectangular outline. The length to width ratio is approximately 1.36, an elegant proportion that maintains presence on the finger while maximizing table area for color saturation. Measured depth is approximately 57.6 percent calculated against the average of length and width, a proportion that balances internal light return with even color distribution. Clarity is graded very very slightly included when evaluated at eye level, meaning the stone reads clean to unaided sight and benefits from the step cut geometry which tends to reveal rather than hide internal features, allowing the eye to appreciate its crystalline transparency. The color is described as intense, a vivid pure blue that displays consistent saturation across the table and step facets, and the piece has been professionally heat treated to optimize that blue, with an excellent polish applied to all facet junctions to produce crisp facet outlines and mirror like table reflections.

From a lapidary perspective the combination of an emerald cut and high clarity creates a deliberate optical strategy. The broad rectangular table and long parallel crown facets act as a color window, enabling the saturated blue to present evenly under ambient and directional lighting, while the step pavilion layers return controlled flashes of light rather than a scintillating display, which suits collectors who prefer depth of color over brilliance. The cutter has prioritized symmetry and facet proportion to reduce parasitic light leakage along the girdle, preserving the stone s perceived weight and presence in mounting. The trimmed corners provide practical resistance to chipping, which is particularly important for wearable designs, and the geometry is conducive to both bezel and low prong settings that protect the girdle while allowing the table to command attention. For bespoke design work the stone s scale and profile adapt well to a substantial solitaire ring, an architectural cocktail ring, or a statement pendant, each application using the emerald cut s linear language to emphasize the stone s transparency and intense blue rather than competing with excessive metalwork.

Ethical sourcing and provenance form a central part of the offering, the aquamarine originating from Brazil, a source known for producing stones with strong color and clarity under responsible mining practices. The Natural Gemstone Company sources this gem through vetted supply chains where documentation of origin, fair labor practices, and environmentally mindful mining methods are maintained, and the heat treatment applied is fully disclosed in keeping with our transparency policy. For the conscious collector this piece aligns with values of traceability and accountability, as it is acquired through partnerships that support local mining communities and seek to minimize ecological impact through improved extraction protocols and reclamation efforts. We provide recommended care guidance to preserve the cut and polish, advising avoidance of harsh chemicals and extreme thermal shock, with routine cleaning using mild detergent and a soft brush to maintain brilliance. The Natural Gemstone Company stands behind the gem with full disclosure documentation and optional independent grading, and we encourage customers to consult our gemological team for setting recommendations or custom design briefs to ensure the stone s proportions and cut are optimized for long term wear and appreciation. This aquamarine is presented as an investment in both aesthetic quality and ethical stewardship, suitable for discerning collectors who seek technical refinement and responsible sourcing in a single exemplary gemstone.