GIA Certified Mozambique Ruby 1.65cts – Investment-Grade Natural Oval Ruby 9.03x6.89mm Loose Gemstone
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This exceptional Mozambique ruby displays the rich, passionate red hue that has made fine rubies one of the most coveted gemstones in the world for centuries. Measuring approximately 9.03 x 6.89 mm and weighing ~1.65 carats, this elegant oval cut offers beautiful face-up presence with a refined silhouette that would make a striking centerpiece in a custom ring or pendant. Its elongated proportions create a flattering, timeless look while allowing the stone’s vivid color and natural brilliance to truly shine.
Accompanied by a respected Gemological Institute of America certification, this ruby carries the confidence and transparency serious collectors and fine jewelry lovers value. Mozambique rubies have become increasingly sought after for their exceptional saturation, lively crystal, and rarity, often rivaling some of the world’s most prestigious ruby sources. Investment-grade natural rubies of this caliber continue to grow more difficult to source, especially in beautifully matched oval shapes with strong color and desirable clarity.
Whether destined for a future heirloom design or added to a curated gemstone collection, this ruby offers the kind of timeless beauty and rarity that transcends trends. A gemstone like this is not simply jewelry material — it is a natural treasure formed over millions of years, meant to be admired for generations to come.
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FAQ
What are treatments?
Natural gemstones are mined from the earth and come in a range of qualities. The quality of a gem is based on their color, cut, clarity and carat weight. Treatments are used to enhance earth mined gemstones to improve quality so that they can be used in jewelry.
Treatments can affect the value of a gemstone so it is important to know if your gem is treated before you buy to make sure you're getting the value you are paying for. If you're interested in learning more about treatments visit our blog here.
How do I know a gemstone is natural?
All of our gemstones are handpicked by our GIA accredited gemologist. We are happy to offer a certificate of authenticity for any gemstone purchase from NNJ Designs. We can also send a gemstone to the GIA for certification.
We primarily deal in natural gemstones, but as lab grown gems increase affordability, we offer them on rare occassion. We will always disclose if a gemstone is natural or lab created.
Can one of your designs be cast to fit my center stone?
We can cast any of our designs to perfectly fit the shape and size of your center stone! Please share the dimensions of your gem along with the design that you are interested in and we will work up a quote.