1.79 Ct. Blue Aquamarine from Mozambique

This listing describes a single transparent oval aquamarine weighing 1.79 carat, with calibrated dimensions of 9.99 by 6.98 by 4.50 millimeters. The gem is faceted in a mixed brilliant style, combining a brilliant crown with a modified pavilion, and presents a length to width ratio of approximately 1.43 which yields an elegant elongated outline for classical ring and pendant applications. Proportions are well balanced, with depth approximately 53 percent relative to the average diameter, a dimension that supports efficient light return and a broad face up presentation. Clarity is graded as very very slightly included when evaluated at eye level, indicating exceptional transparency to the naked eye while retaining minute internal features under magnification. Color intensity is described as light, showing the characteristic pale ocean blue associated with quality aquamarine material. The stone has undergone controlled heat treatment to enhance the blue tone, it is of Mozambique origin, and it has received an excellent polish that produces crisp facet junctions and lively surface reflection. This fine example is offered by The Natural Gemstone Company.

The mixed brilliant cutting approach applied to this oval aquamarine is executed to maximize both brilliance and even color distribution, a priority for beryl species which have modest dispersion. The crown displays a precise arrangement of main facets and star facets that channel incoming light toward the table while creating measured scintillation across the surface. Below the girdle the pavilion integrates modified brilliant facets that are oriented to return skylike blue flashes rather than colored dispersion, which is characteristic of aquamarine optics. Facet geometry emphasizes symmetry and proportionality, with consistent pavilion angles and a slightly domed table plane that preserves the stone volume while maintaining optical performance. The cutter optimized the facet sizes to enhance face up brightness while reducing localized windowing or extinction, an approach that preserves weight yet prevents a washed out appearance. Edge and facet junctions are clean and free of notable nicks, demonstrating methodical lapidary attention and machine guided but artisan supervised finishing.

Clarity considerations are important for aquamarine valuation and for selecting an appropriate setting, and this example rates very very slightly included at eye level which indicates an essentially eye clean presentation under normal viewing conditions. The visible transparency is excellent, with minute feathering or pinpoint inclusions confined to areas that do not interfere with light transmission. Under loupes or microscopy these internal features can be used to confirm natural origin and to assist in matching for paired or matched set work. Aquamarine sits at approximately seven point five to eight on the Mohs scale which provides good resistance to abrasion, however care should be taken with prong work and bezel interfaces to avoid hard knocks near facet junctions. The excellent polish reduces the likelihood of surface wear and aids in cleaning, and the disclosed heat treatment is stable under typical jewelry conditions, making this stone suitable for daily wear when properly set and maintained.

The Mozambique origin of this aquamarine places it within a recent and important producing region where pegmatitic environments yield clean, gem quality beryl material. Heat treatment is a long standing and accepted enhancement practice for aquamarine, employed to remove residual greenish tones and to produce a uniform sky to ocean blue while leaving the crystalline structure intact. Historically aquamarine has been associated with maritime heritage, used as a talisman by sailors and as an emblem of tranquility and clear communication in many traditional societies. The light blue of this piece aligns with those cultural uses, echoing centuries of usage in signet, amulet, and regal jewelry. At The Natural Gemstone Company we document origin and treatment to preserve that heritage and to support responsible sourcing, and we present this gem as an authentic contemporary continuation of classical aquamarine material that has been prized for its clarity and calming color since antiquity.

From a design and setting perspective this 1.79 carat oval is versatile. The elongated oval silhouette and its dimensions lend themselves to a four prong solitaire that emphasizes table presence, to a halo configuration that amplifies apparent size and increases scintillation, or to a low profile bezel that protects the girdle and suits active wearers. An open back setting will enhance color depth and maximize light return, while a closed back mounted in warm metals will deepen perceived blue and produce a vintage aesthetic. Pairing with small brilliant cut pavé or bezel set diamonds around the perimeter will add contrast and increase perceived brilliance, while a solitaire mounting will allow the aquamarine to convey its inherent serene tone unencumbered. If you require additional technical information such as exact table and crown angles, facet map photography, or matching stones for a conversion into a paired set, The Natural Gemstone Company can supply detailed images and measurement reports to assist your design and evaluation process.