Round Ruby Lab Created Loose Stone

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On All Ziamond Gems

Ziamond’s round lab-grown ruby synthetic loose stones offer you the finest genuine man made lab created ruby alternative at a fraction of the cost. Our round man made rubies are created in a laboratory under the same conditions as nature takes to make a genuine mined natural Ruby gemstone. They possess the same physical, chemical, and optical characteristics of natural rubies. While they are technically imitation ruby gems and sometimes referred to as fake rubies, they possess the same physical, chemical, and optical characteristics of natural rubies. Our man made round red rubies are lab created and lab grown synthetic Corundum. Corundum is the name of the natural crystalline structure of a genuine ruby. They are also just as hard, with a hardness of 9 on the Mohs scale and are hand cut and hand polished in the same manner as genuine precious rubies. Ziamond's synthetic round rubies can be worn daily with peace of mind to withstand the day to day rigors of daily wear. Our man made rubies undergo all the same post mining finishing processes that a fine genuine ruby does. They are all hand cut and hand polished to fine gem quality specifications, insuring proper reflection and refraction of a rich and lustrous color of gem quality red rubies. Choose your preferred size among the menu options. Custom stone cutting services are also available via special order. Email us with your exact dimensions or a copy of your written appraisal. There are no returns on all loose stones, they are a final sale, see the policies page for our terms and conditions.


  • Large selection of carat sizes available, see menu options - .25 ct. 4mm, .38 ct. 4.5mm, .50 ct. 5mm, .63 ct. 5.5mm, .75 ct. 6mm, 1 ct. 6.5mm, 1.25 ct. 7mm, 1.50 ct. 7.5mm, 2 ct. 8mm, 2.50 ct. 9mm, 3 ct. 9.5mm, 3.50 ct. 10mm, 4 ct. 11mm, 5.50 ct. 12mm, 7 ct. 13mm, 8.50 ct. 14mm, 11 ct. 15mm
  • Cut and polished to genuine mined diamond specifications
  • Larger carat sizes available
  • Handmade in the USA
  • Custom stone cutting services via special order - simply call, live chat or email us 
  • Questions? Live Chat with representatives or call 1-866-942-6663

The Ziamond Distinction

  • Lifetime Guarantee on all Ziamond gems
  • Finest high quality hand cut, hand polished Russian formula lab created diamond look cubic zirconia
  • Also available in various colors of lab created stones - white diamond look, canary yellow diamond look, pink diamond look, red ruby, blue sapphire and green emerald
  • Wear, care and clean like genuine mined diamonds
  • Over 100 years combined fine jewelry experience, on-line for more than 20 years 
  • Experienced and knowledgable staff ready to assist with your questions or custom designs
6 reviews
  • Great color ruby 5

    Posted by Rodger F on Jun 12th 2023

    Perfect for what I was looking for. Genuine rubies are so expensive, I had no idea. This one looks great and my jeweler who set it into the ring I wanted commented on how nice the color and the cut were. Thanks, Ziamond.

  • Happy with quality 5

    Posted by Burt Conyers on Nov 30th 2022

    I was seeking a ruby stone for a pendant setting I had for my wife. Moned rubies were so expensive and looked pretty bad for what I could afford. The Ziamond ruby is a great color with a lot of sparkles. Glad I found them and save a lot of money.

  • Saved a ton compared to a mined ruby 5

    Posted by Steven Gerber on Nov 19th 2022

    I ordered on a Tuesday and got it on Thursday. The cut and color were exactly what I had hoped for. The mined version would have cost me thousands. Ziamond has a nice product. I'll be back for another soon.

  • Perfect for what I needed it for 5

    Posted by Lydia P. on Nov 12th 2022

    Lost a ruby from an estate ring that I own. I ordered a stone from Ziamond and it did the trick. It blends right in with the real rubies in my ring and looks great.

  • Be very careful 1

    Posted by M. Morgan on Oct 24th 2022

    I ordered and received two "rubies" which are not deep red as seen on their website, they have a pinkish hue. The jewelers I am using to make a custom ring told me they do not look like rubies, which I agreed, I had to use another stone to complete the ring. Now Ziamond is being very difficult and is charging a 35% restocking fee and not paying for return shipping if I return the stones. Very disappointing.

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