ATERNA Old Mine Cushion

The Diamanti ATERNA® Old Mine Cushion Also called the "Miner Cut," Old Mine cut diamonds are the precursors to today’s cushion cut stones. Old Mine Cushion cut diamonds had basically two certainties, a three dimensional structure and an eight fold faceting symmetry a table and culet summed up to 58 facets. This was the primary shape used in the Victorian and Edwardian eras. They are very rare and vary in look

The ATERNA is a Lab created gemstone like nothing else you have ever laid eyes on. More rare and brilliant than a diamond and moissanite it captures even the slightest light source transforming it into an intense scintillation of fire and sparkle.

Superbly Engineered in our state-of-the-art laboratories, our scientists prepare a specialized blend comprised of 50% Pure Carbon and 50% Pure SIC making it the second hardest Gem in the world at 9.5 hardness - only 2nd to a diamond at 10 Mohs hardness. Because of the high carbon content, it will test positive for a diamond on most diamond testers and pass the fog and transparency test. Like a diamond, it has excellent durability and can handle the high stresses of being worn daily. We use the latest advanced rough processing to achieve a colorless pure polytype giving the ATERNA exquisite E/F and G/H color profiles.

Each ATERNA is hand-faceted and cut by hand by our master diamond cutters to Ideal/Excellent proportions, guaranteeing the highest light reflection entering the stone. Without exception, these features clearly make the Aterna the most advanced and genuine diamond quality stone in the marketplace today.

To add the ATERNA to any product with the equivalent center stone size, email us at for pricing and availability.

    • Item#: ATERNAOMCU

      Gem Information
      Gem Shape: Old Mine Cushion Cut
      Gem Color: Colourless E/F & G/H
      Enhancement: 50% Carbon & 50% SIC
      Clarity: VVS1
      Cut Grade: Excellent / Ideal
      Warranty: Lifetime Performance
    • View the ATERNA® Old Mine Cushion Live

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      View the ATERNA® Test Positive for a Diamond

    • We proudly offer world-wide shipping including Canada, United States, UK, France, Ireland, Mexico, Spain, China, Italy, Australia, New Zealand just to name a few.

      Receive FREE Shipping anywhere in North America on All Orders.
      International orders receive a discounted rate that is calculated automatically by our system at checkout.

      When can I expect my Delivery?
      Our Aterna gems are individually hand-made (never mass produced) for superb quality and workmanship. Available stock sizes shown usually ship within 2 - 3 business days*. Special order sizes may take 2-3 weeks to complete, plus shipping time. If you require this item for a specific date, please email us at for possible RUSH options. 

      *Actual delivery time will depend on the shipping method selected at checkout.

      If you require this item for a specific date, please add your details to the comment section at checkout or contact us for RUSH options at
    • We recognize the importance of providing superior products and ensuring the highest quality jewelry from the day you receive it and all through the years to come. That is why we offer a Lifetime Guarantee on our Loose stones and one year Manufactures Guarantee on all our jewelry for your total peace of mind.

      Diamanti Stone Coverage
      We stand behind the quality and craftsmanship of our Diamanti stones and offer a complimentary Lifetime Guarantee. Our Lifetime Guarantee covers color and optical properties of brilliance and fire change. See our Lifetime Guarantee page for full details.

      Peace Of Mind Coverage
      Rest at ease with our Peace of Mind Coverage that includes loss replacement for melee accent stones, stone tightening and a complimentary cleaning with service, all free of charge for one year.

      Quality Guaranteed
      At Quorri we are obsessive about quality. We want you to enjoy your Jewelry for years to come, so we handcraft each piece of jewelry using only the highest quality materials and time-honored techniques. We proudly stand behind our products and are committed to bringing you unique styles reflecting the devotion, skill, and creativity of our master craftsmen and artisans.


f you would like to personalize a collection ring with Aterna or create a custom Aterna with a different shape, size and color that is not listed, Fill out the form below and a custom specialist will be in contact via email with availability and pricing. If you do not receive a response, check your spam folder or email us direct at 

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