1.87 Ct. Blue Aquamarine from Mozambique

One beautiful transparent heart shaped aquamarine, weighing 1.87 carat, is presented here by The Natural Gemstone Company, measuring 8.29 by 8.39 by 5.48 millimeters, with a faceted mixed brilliant cutting style, a clarity grade of very very slightly included, evaluated at eye level, medium color intensity, and an excellent polish. This gem originates from Mozambique, a region that has become recognized for producing aquamarines with fresh, oceanic blues and good crystalline clarity. The heart shape adds a romantic and wearable silhouette, while the mixed brilliant approach to faceting combines small, carefully placed pavilion and crown facets to produce scintillation and lively light return. The medium intensity blue is balanced, not overly saturated, allowing both the gem and any metal setting to interact attractively with the stone, and the excellent polish ensures clean facet junctions and maximum brilliance. The heat treatment noted is a standard and stable enhancement for aquamarine, applied to refine and clarify the blue tone while preserving the gem structure and long term stability.

From a gemological perspective, the clarity descriptor very very slightly included, evaluated at eye level, communicates that any natural inclusions are extremely minor, they do not detract from the gem when viewed without magnification, and they serve as diagnostic markers of natural origin rather than detriments to beauty. The mixed brilliant cut is expertly executed in this example, producing a pleasing balance of brightness and fire. Using the recorded dimensions, the average diameter is approximately 8.34 millimeters, and the depth of 5.48 millimeters yields a depth percentage close to 66 percent, a proportion that is consistent with well cut mixed brilliant stones and that contributes to effective light performance and a stable, proportional profile when set into jewelry. The heart outline is symmetrical, with a pronounced cleft and gently rounded lobes, qualities that require precision cutting to maintain gemstone weight while achieving a flattering shape and strong visual appeal.

Durability is an important consideration for buyers, and aquamarine, as a variety of the beryl family, rates between 7.5 and 8 on the Mohs hardness scale. To put that in context, diamond registers at 10, corundum varieties such as sapphire and ruby are at 9, topaz at 8, and quartz at 7. This hardness range means aquamarine is sufficiently hard for daily wear in many types of jewelry, including rings, bracelets, and pendants, particularly when thoughtfully set. However, hardness is not the only factor in wearability, toughness and cleavage also matter, and aquamarine can chip if subjected to hard knocks at facet junctions or the girdle. For an educated buyer seeking both beauty and longevity, a protective setting such as a bezel or partial bezel, or a design that elevates the stone only modestly from its mount, will preserve the stone while allowing its color and brilliance to be admired. Routine care can be safely accomplished with warm soapy water and a soft brush, and while the heat treatment is industry standard and stable, it is prudent to avoid harsh abrasives and high heat or steam cleaners in cases where inclusions are present.

The combination of a desirable carat weight near two carats, a classic heart shape, mixed brilliant faceting, very very slightly included clarity, medium blue intensity, excellent polish, and a documented Mozambique origin creates a compelling purchase for collectors and connoisseurs. Mozambique has produced aquamarines with clean crystal structure and attractive mid tone blues, and a heat treated specimen such as this is an accepted and transparent offering in the trade, with treatment performed to enhance color uniformity rather than to mask defects. For the educated buyer, the main value drivers are color quality, transparency and clarity, cut proportions and polish, and the gem provenance, all of which are favorable in this example. At The Natural Gemstone Company we prioritize clear grading disclosure and accurate photography, and the accompanying images showing the stone on a hand provide practical scale and demonstrate how the heart shape sits when set. Whether you are considering this aquamarine for a signature engagement piece, a pendant to wear close to the heart, or a custom commission, the balance of aesthetics and durability makes it an attractive candidate, and we invite you to request a detailed report or additional photos if you would like further confirmation of the gem attributes prior to purchase.