3.71 Ct. Ruby from Mozambique

Meet a superb Mozambique ruby offered by The Natural Ruby Company, a transparent oval weighing 3.71 carats, measuring 10.89 x 8.70 x 4.30 millimeters, and cut in a mixed brilliant style to marry the fire of a brilliant with the depth of an oval. The purplish red hue is intense and vibrant, a color that catches the eye without appearing overly dark, and the excellent polish ensures each facet reflects light with crisp, energetic sparkle. Clarity is graded as included when evaluated at eye level, which is common for natural rubies of this quality and size, and the stone has been heat treated to enhance color and clarity in a stable, market accepted way. Compared to commercial cabochons and heavily included rubies that lack transparency, this gem stands out for its combination of transparency, color intensity, and cutting precision, which together increase its visual impact and presence in a finished jewelry piece.

Durability is a key reason rubies are prized for everyday wear, and this Mozambique ruby benefits from the hardness of corundum on the Mohs scale at 9, second only to diamond at 10. That means it is significantly more resistant to scratches than gems such as emerald which rates around 7.5 to 8, tourmaline which sits near 7 to 7.5, garnet which typically ranges from 6.5 to 7.5, and spinel which measures about 8. A 9 on the Mohs scale makes this ruby an excellent choice for rings, especially engagement rings that are worn daily, because it resists surface wear and maintains polish over time. While no gemstone is indestructible, rubies tolerate the knocks and abrasions of regular life better than many colored stones, and because this gem is heat treated rather than clarity enhanced with filler, standard professional cleaning using warm soapy water and a soft brush is safe, and ultrasonic cleaning is typically acceptable though sudden thermal shocks should be avoided.

When you compare this 3.71 carat Mozambique ruby to other market options, several advantages become clear. Authentic Burmese rubies command a premium for a particular red known as pigeon blood, but those stones at this size are rare and often much more expensive, making this Mozambique ruby a more accessible way to obtain a deep, saturated red at a better value per carat. Lab created rubies offer bright color at low cost but lack the rarity and natural origin that collectors and many buyers desire. Spinel and garnet can show similar tones but lack corundum hardness and historically hold less resale and collector value. The mixed brilliant cut of this stone is deliberately chosen to maximize scintillation while keeping weight distribution attractive for common ring and pendant settings, and the excellent polish is evidence of skilled lapidary work that enhances light return and wearability. The included clarity, visible at eye level, provides a natural fingerprint that proves authenticity and often allows buyers to own a larger and more colorful natural ruby for the same budget than they might spend on a fully eye clean stone.

At The Natural Ruby Company we prioritize full disclosure and responsible sourcing, and this ruby is accompanied by clear information about its Mozambique origin and heat treatment, which is stable and widely accepted in the trade. For customers seeking a statement piece, a solitaire setting will showcase the oval silhouette and depth of color, while a halo or three stone design will amplify perceived size and brilliance. If you prefer a design that balances protection and visibility consider a bezel with a high gallery, or classic prongs to show off the mixed brilliant cut. This ruby represents a rare balance of size, intense purplish red hue, superior polish, and corundum durability, making it a compelling choice for anyone looking for a high impact natural ruby with strong long term value. Contact The Natural Ruby Company for detailed photos, certification options, and custom setting suggestions so you can see how this exceptional Mozambique ruby will perform in the jewelry piece you imagine.