3.71 Ct. Ruby from Mozambique

This listing presents a transparent, oval shape ruby weighing 3.71 carats, with dimensions of 11.65 by 8.26 by 4.36 millimeters, a mixed brilliant cut, a clarity grade of included when evaluated at eye level, vivid color intensity, and an excellent polish. The stone has been heat treated, and it is of Mozambique origin. At this important size and with this color, the gem occupies a sweet spot in the market where collector interest and wearable practicality meet. The mixed brilliant cut has been chosen to balance scintillation and color face up, and the dimensions produce a generous face up area suitable for prominent rings or pendants. The Natural Ruby Company offers this piece with full disclosure of enhancement, and heat treatment in ruby is an established and accepted method to improve color and clarity while maintaining long term stability, when properly disclosed and professionally done.

Color is the primary value driver for rubies, and this specimen displays a pinkish red hue with vivid saturation that reads strongly at the table and across the crown. Vivid color intensity indicates strong saturation without becoming overly dark, which allows the stone to retain lively light return and a pleasing presence on the finger or in a pendant. The pinkish red description signals a balance between red primary tone and a touch of pink secondary tone, which can be extremely desirable for buyers seeking a lively and modern ruby appearance. Mozambique has become a significant source of richly colored rubies in recent decades, and material from that region often offers saturated hues and good transparency. For educated buyers, the combination of vivid color, transparent body, and a well executed mixed brilliant faceting plan means the stone reads as vibrant in hand, and when set it will project color effectively under both natural daylight and the warmer tones of indoor lighting.

Clarity and cut determine how that color plays to the eye, and this ruby is graded included at eye level. In natural rubies, inclusions such as mineral crystals, needle like rutile silk, and occasional healed fissures are common, and they do not necessarily detract from value if the color and transparency are strong. Eye visible inclusions require that these features are considered in mounting and design, but they also confirm natural origin and a lack of heavy filling enhancements. The mixed brilliant cut here works to maximize light return through a balanced crown and pavilion relationship, and the measured depth of approximately forty four percent is within the practical range for oval gems aiming to combine face up spread with internal brilliance. When comparing brilliance to more common gemstones, it helps to remember that ruby refractive index falls around one point seven six to one point seven seven, which is lower than diamond at about two point four two, and similar to corundum in general including sapphire. This means rubies will not exhibit the same level of fire and brilliance as diamond, however color saturations and strong fluorescence in chromium rich stones frequently enhance perceived brightness. Compared with blue sapphire or spinel, a vividly saturated pinkish red ruby stands out because the chromophore is chromium, which produces intense color that commands the eye, and where the faceting emphasizes color rather than dispersive sparkle alone. A mixed brilliant cut on a vivid ruby therefore produces a different kind of optical appeal, one that favors rich, even color and lively scintillation rather than high dispersion.

For the discerning buyer, several practical and market points make this specimen noteworthy. First, the size of 3.71 carats in a transparent, vividly colored ruby from Mozambique provides significant rarity and investment appeal, because larger rubies with strong color and transparent body are scarce relative to smaller or heavily included stones. Second, the documented heat treatment is industry standard and materially accepted, it enhances color and clarity while preserving structural integrity when performed correctly. Third, the clarity grade included confirms natural internal features that both authenticate the gem and require careful setting choices, for example protective bezel work or prong placement that avoids stress on visible inclusions. For wearability and design, this oval shape and generous face up spread make the stone an excellent center for a solitaire ring, a halo setting with high quality accent diamonds, or a classic pendant, and the vivid pinkish red will pair elegantly with yellow gold for a warm presentation, and with platinum or white gold for a more contemporary contrast. The Natural Ruby Company stands behind this ruby with transparent provenance information and consistent grading language, and we recommend buyers consider formal documentation when desired. Routine care includes avoiding sudden thermal shock and harsh chemicals, and routine professional inspection for secure mounting. If you value color first, along with solid transparency and an authoritative origin from Mozambique, this ruby is a compelling choice for investment quality jewelry that will be admired for decades.